24-1 PowerPoint
... Types of Vegetative Reproduction Asexual reproduction allows a single plant to produce genetically identical offspring, enabling well-adapted individuals to rapidly fill a favorable environment. One drawback of asexual reproduction is that it does not produce new combinations of genetic traits, whic ...
... Types of Vegetative Reproduction Asexual reproduction allows a single plant to produce genetically identical offspring, enabling well-adapted individuals to rapidly fill a favorable environment. One drawback of asexual reproduction is that it does not produce new combinations of genetic traits, whic ...
Bundle sheath cells and cell-specific plastid
... dicotyledonous leaf is a relatively simple structure composed of only a few differentiated cell types, which arise from leaf primordial cells derived from the shoot apical meristem. Although leaf growth and development have been well characterised in a number of dicotyledonous species, very few stud ...
... dicotyledonous leaf is a relatively simple structure composed of only a few differentiated cell types, which arise from leaf primordial cells derived from the shoot apical meristem. Although leaf growth and development have been well characterised in a number of dicotyledonous species, very few stud ...
Morphological and Anatomical Studies on Selected Dicot
... Subhan et al., [13] discussed that the stem of C.procera can store and conduct large amount of water due to more vascular bundles. The results of present studies are not supported by previous worker Kumar et al., [14] reported that the pericycle is in the form of patches. The patched pericycle might ...
... Subhan et al., [13] discussed that the stem of C.procera can store and conduct large amount of water due to more vascular bundles. The results of present studies are not supported by previous worker Kumar et al., [14] reported that the pericycle is in the form of patches. The patched pericycle might ...
Vascular plants
... The size of the leaf, or the amount of surface area, corresponds to limiting factors in that ecosystem. For example, shade plants have large leaves to increase exposure to sunlight, while plants living in dry climates have reduced surface area to ...
... The size of the leaf, or the amount of surface area, corresponds to limiting factors in that ecosystem. For example, shade plants have large leaves to increase exposure to sunlight, while plants living in dry climates have reduced surface area to ...
Branching out in new directions: the control of root
... Other hormone pathways are also involved in the regulation of LR formation, and recent research provides new insight into these pathways. Below we will outline how plant hormones, with particular emphasis on auxin, interact with various cellular processes to control each stage of LR development. 1. ...
... Other hormone pathways are also involved in the regulation of LR formation, and recent research provides new insight into these pathways. Below we will outline how plant hormones, with particular emphasis on auxin, interact with various cellular processes to control each stage of LR development. 1. ...
LEAFY COTYLEDON1, a Key Regulator of Seed Development, Is
... Methods). As shown in Figure 1, phylogenetic analysis of these HAP3 B domain amino acid sequences from Arabidopsis and S. cerevisiae suggested that S. moellendorffii and P. patens possessed non-LEC1-type HAP3 subunits, although much of the phylogeny of the non-LEC1-type HAP3 subunits was not fully r ...
... Methods). As shown in Figure 1, phylogenetic analysis of these HAP3 B domain amino acid sequences from Arabidopsis and S. cerevisiae suggested that S. moellendorffii and P. patens possessed non-LEC1-type HAP3 subunits, although much of the phylogeny of the non-LEC1-type HAP3 subunits was not fully r ...
Common Name: Marshmallow Botanical Name: Althaea officinalis L
... Marshmallow is a perennial herb that is native to moist areas of Europe, western Asia, and southern England. It has been naturalized in the U.S. The leaf and root are imported primarily from Eastern Europe and what was formerly the Soviet Union. Marshmallow is both gathered in the wild and cultivate ...
... Marshmallow is a perennial herb that is native to moist areas of Europe, western Asia, and southern England. It has been naturalized in the U.S. The leaf and root are imported primarily from Eastern Europe and what was formerly the Soviet Union. Marshmallow is both gathered in the wild and cultivate ...
Systematic Implications of DNA variation in subfamily Opuntioideae
... angiosperms still is uncertain, but most would agree on a Triassic or ...
... angiosperms still is uncertain, but most would agree on a Triassic or ...
Seedless Vascular Plants
... Equisetopsida. The single genus Equisetum is the survivor of a large group of plants, known as Arthrophyta, which produced large trees and entire swamp forests in the Carboniferous. The plants are usually found in damp environments and marshes (Figure 2). ...
... Equisetopsida. The single genus Equisetum is the survivor of a large group of plants, known as Arthrophyta, which produced large trees and entire swamp forests in the Carboniferous. The plants are usually found in damp environments and marshes (Figure 2). ...
Control of final organ size by Mediator complex subunit 25 in
... activity was detected in cotyledons, leaves and roots (Fig. 3B-E). Higher GUS activity was observed in older leaves than younger ones (Fig. 3D, see Fig. S3A in the supplementary material). After bolting, MED25 was primarily expressed in floral organs, leaves and roots, but not in stems (Fig. 3F). In ...
... activity was detected in cotyledons, leaves and roots (Fig. 3B-E). Higher GUS activity was observed in older leaves than younger ones (Fig. 3D, see Fig. S3A in the supplementary material). After bolting, MED25 was primarily expressed in floral organs, leaves and roots, but not in stems (Fig. 3F). In ...
Form 3 (Track 2)
... The leaf pores were examined under a light microscope with an eyepiece lens of x10 and an objective lens of x45. (i) Calculate the total magnification. (ii) Name the microscope part used for focusing. (2, 1 mark) Total: 15 marks ...
... The leaf pores were examined under a light microscope with an eyepiece lens of x10 and an objective lens of x45. (i) Calculate the total magnification. (ii) Name the microscope part used for focusing. (2, 1 mark) Total: 15 marks ...
Control of final organ size by Mediator complex
... activity was detected in cotyledons, leaves and roots (Fig. 3B-E). Higher GUS activity was observed in older leaves than younger ones (Fig. 3D, see Fig. S3A in the supplementary material). After bolting, MED25 was primarily expressed in floral organs, leaves and roots, but not in stems (Fig. 3F). In ...
... activity was detected in cotyledons, leaves and roots (Fig. 3B-E). Higher GUS activity was observed in older leaves than younger ones (Fig. 3D, see Fig. S3A in the supplementary material). After bolting, MED25 was primarily expressed in floral organs, leaves and roots, but not in stems (Fig. 3F). In ...
MICROPROPAGATION OF CARLINA ACAULIS L.
... IBA (0.049 or 0.49 μM). The other half were transferred directly to ex vitro conditions (plastic pots containing a sterile mixture of vermiculite and sand), and their rooting ability was analyzed after 8 weeks. Plantlets obtained after 8 weeks of culture on the rooting medium were removed from the i ...
... IBA (0.049 or 0.49 μM). The other half were transferred directly to ex vitro conditions (plastic pots containing a sterile mixture of vermiculite and sand), and their rooting ability was analyzed after 8 weeks. Plantlets obtained after 8 weeks of culture on the rooting medium were removed from the i ...
Xylem tissue specification, patterning, and
... this herbaceous plant does not normally undergo extensive secondary growth, two regions of vascular cambium—zones of fascicular cambium and the neighbouring zones of interfascicular cambium—are found within the Arabidopsis inflorescence stem. Despite their proximity to each other and their apparent ...
... this herbaceous plant does not normally undergo extensive secondary growth, two regions of vascular cambium—zones of fascicular cambium and the neighbouring zones of interfascicular cambium—are found within the Arabidopsis inflorescence stem. Despite their proximity to each other and their apparent ...
Angiosperms or Flowering Plants the phylum Magnoliophyta
... Angiosperms focus of the course • comprise the phylum Magnoliophyta • vast majority of plant diversity What are the non-angiosperm land plants? • DNA evidence has clarified much but not all of the relatioships of other phyla (= divisions) See first pages of Chpts 1 & 3 for more detail (Plant (Plant ...
... Angiosperms focus of the course • comprise the phylum Magnoliophyta • vast majority of plant diversity What are the non-angiosperm land plants? • DNA evidence has clarified much but not all of the relatioships of other phyla (= divisions) See first pages of Chpts 1 & 3 for more detail (Plant (Plant ...
Arabidopsis thaliana - Molecular, Cell, and Developmental Biology
... History of Arabidopsis thaliana "Arabidopsis thaliana was discovered by Johannes Thal (hence, thaliana) in the Harz mountains in the sixteenth century, though he called it Pilosella siliquosa (and it has gone through a number of name changes since). The earliest report of a mutant (that I know of) w ...
... History of Arabidopsis thaliana "Arabidopsis thaliana was discovered by Johannes Thal (hence, thaliana) in the Harz mountains in the sixteenth century, though he called it Pilosella siliquosa (and it has gone through a number of name changes since). The earliest report of a mutant (that I know of) w ...
Morphological evolution in land plants
... plants is exemplified by the evolution of type II MADSbox transcription factors. A single type II MADS-box gene functions during haploid reproductive cell differentiation in different charophyte algae [38]. Type II MADS-box genes radiated in land plants and formed two groups: the MIKCc and MIKC* [39 ...
... plants is exemplified by the evolution of type II MADSbox transcription factors. A single type II MADS-box gene functions during haploid reproductive cell differentiation in different charophyte algae [38]. Type II MADS-box genes radiated in land plants and formed two groups: the MIKCc and MIKC* [39 ...
AGL80 Is Required for Central Cell and Endosperm Development in
... remaining 24%, it could not be determined whether a zygote-like structure was present because the embryo sacs were collapsed. This result suggests that the failure to form endosperm is not the result of a delay in endosperm development. The data presented above suggest that the structural changes as ...
... remaining 24%, it could not be determined whether a zygote-like structure was present because the embryo sacs were collapsed. This result suggests that the failure to form endosperm is not the result of a delay in endosperm development. The data presented above suggest that the structural changes as ...
affected by geological substratum
... be necessary: the overall size, said to be 30-100 cm, is in fact 27-113 cm; and petiole length of the basalleaves is not up to 4 cm but may reach 11.3 cm. Between the populations studied, significant differences were found in overall size, inflorescence length, number of flowers, and petiole length ...
... be necessary: the overall size, said to be 30-100 cm, is in fact 27-113 cm; and petiole length of the basalleaves is not up to 4 cm but may reach 11.3 cm. Between the populations studied, significant differences were found in overall size, inflorescence length, number of flowers, and petiole length ...
- Warwick WRAP
... can be used as a tool to study these cellular changes in another, more easily accessible, tissue type. To reprogram cells, genetic manipulation of particular regulatory factors that play critical roles in establishing or repressing the seed developmental program can be used to bring about a change o ...
... can be used as a tool to study these cellular changes in another, more easily accessible, tissue type. To reprogram cells, genetic manipulation of particular regulatory factors that play critical roles in establishing or repressing the seed developmental program can be used to bring about a change o ...
IJBT 7(4) 536-540
... androgenesis in several plants26-29. They also offer advantages, such as, direct monitoring of microspore development and avoidance of plants from somatic tissues of the anther30. However, in Curculigo, isolated microspores did not develop into embryos with any of the growth regulators tested. Simil ...
... androgenesis in several plants26-29. They also offer advantages, such as, direct monitoring of microspore development and avoidance of plants from somatic tissues of the anther30. However, in Curculigo, isolated microspores did not develop into embryos with any of the growth regulators tested. Simil ...
Plant Reproduction
... Flowers are responsible for sexual reproduction in plants. A male sex cell and a female sex cell unite inside a flower. The fruit and seeds develop from the flower. Later, a new plant develops from a seed. When a plant reproduces by sexual reproduction, there are differences between the parent plant ...
... Flowers are responsible for sexual reproduction in plants. A male sex cell and a female sex cell unite inside a flower. The fruit and seeds develop from the flower. Later, a new plant develops from a seed. When a plant reproduces by sexual reproduction, there are differences between the parent plant ...
noxious weeds - Summit County Government
... Canada Thistle is a member of the aster or sunflower family. Canada thistle was introduced from Europe. It is a creeping perennial which reproduces by seeds and fleshy, horizontal roots. The erect stem is hollow, smooth and slightly hairy, 1 to 5 feet tall, simple, and branched at the top. The leave ...
... Canada Thistle is a member of the aster or sunflower family. Canada thistle was introduced from Europe. It is a creeping perennial which reproduces by seeds and fleshy, horizontal roots. The erect stem is hollow, smooth and slightly hairy, 1 to 5 feet tall, simple, and branched at the top. The leave ...
Методичні вказівки для студентів на кожне практичне заняття, які
... CHECK-UP QUESTIONS: 1. Leaf, its significance and function. 2. Morphological characteristics of the leaf components (leaf blade (lamina), petiole, stipules). 3. Types of leaves arrangement on the stem and types of leaf attachment to the stem. Simple and compound leaves. 4. Morphological characterist ...
... CHECK-UP QUESTIONS: 1. Leaf, its significance and function. 2. Morphological characteristics of the leaf components (leaf blade (lamina), petiole, stipules). 3. Types of leaves arrangement on the stem and types of leaf attachment to the stem. Simple and compound leaves. 4. Morphological characterist ...
Meristem
A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place.Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem (SAM) gives rise to organs like the leaves and flowers, while the root apical meristem (RAM) provides the meristematic cells for the future root growth. SAM and RAM cells divide rapidly and are considered indeterminate, in that they do not possess any defined end status. In that sense, the meristematic cells are frequently compared to the stem cells in animals, which have an analogous behavior and function.The term meristem was first used in 1858 by Karl Wilhelm von Nägeli (1817–1891) in his book Beiträge zur Wissenschaftlichen Botanik. It is derived from the Greek word merizein (μερίζειν), meaning to divide, in recognition of its inherent function.In general, differentiated plant cells cannot divide or produce cells of a different type. Therefore, cell division in the meristem is required to provide new cells for expansion and differentiation of tissues and initiation of new organs, providing the basic structure of the plant body.Meristematic cells are incompletely or not at all differentiated, and are capable of continued cellular division (youthful). Furthermore, the cells are small and protoplasm fills the cell completely. The vacuoles are extremely small. The cytoplasm does not contain differentiated plastids (chloroplasts or chromoplasts), although they are present in rudimentary form (proplastids). Meristematic cells are packed closely together without intercellular cavities. The cell wall is a very thin primary cell wall.Maintenance of the cells requires a balance between two antagonistic processes: organ initiation and stem cell population renewal.Apical meristems are the completely undifferentiated (indeterminate) meristems in a plant. These differentiate into three kinds of primary meristems. The primary meristems in turn produce the two secondary meristem types. These secondary meristems are also known as lateral meristems because they are involved in lateral growth.At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. Cells of this zone have a stem cell function and are essential for meristem maintenance. The proliferation and growth rates at the meristem summit usually differ considerably from those at the periphery.Meristems also are induced in the roots of legumes such as soybean, Lotus japonicus, pea, and Medicago truncatula after infection with soil bacteria commonly called Rhizobium. Cells of the inner or outer cortex in the so-called ""window of nodulation"" just behind the developing root tip are induced to divide. The critical signal substance is the lipo-oligosaccharide Nod-factor, decorated with side groups to allow specificity of interaction. The Nod factor receptor proteins NFR1 and NFR5 were cloned from several legumes including Lotus japonicus, Medicago truncatula and soybean (Glycine max). Regulation of nodule meristems utilizes long distance regulation commonly called ""Autoregulation of Nodulation"" (AON). This process involves a leaf-vascular tissue located LRR receptor kinases (LjHAR1, GmNARK and MtSUNN), CLE peptide signalling, and KAPP interaction, similar to that seen in the CLV1,2,3 system. LjKLAVIER also exhibits a nodule regulation phenotype though it is not yet known how this relates to the other AON receptor kinases.