video slide - CARNES AP BIO | "Nothing in biology makes
... cannot keep pace with the expansion because the cells no longer divide. As a result, these tissues, including the epidermis, rupture. A second lateral meristem, the cork cambium, develops from parenchyma cells in the cortex. The cork cambium produces cork cells, which replace the epidermis. 5 In yea ...
... cannot keep pace with the expansion because the cells no longer divide. As a result, these tissues, including the epidermis, rupture. A second lateral meristem, the cork cambium, develops from parenchyma cells in the cortex. The cork cambium produces cork cells, which replace the epidermis. 5 In yea ...
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 ...
STEMS PLANT BODIES ARE COMPOSED OF CELLS, TISSUES
... VEGETATIVE – INITIATING VEGETATIVE TISSUE & ORGANS – OR REPRODUCTIVE – INITIATING REPRODUCTIVE TISSUE & ORGANS. THE REGION JUST BELOW THE APICAL MERISTEM IS THE SUB-APICAL MERISTEM – A REGION WHERE VISIBLE DIFFERENTIATION OF CELLS BEGINS. IN THE VASCULAR SYSTEM THE FIRST XYLEM TO APPEAR IS THE PROTO ...
... VEGETATIVE – INITIATING VEGETATIVE TISSUE & ORGANS – OR REPRODUCTIVE – INITIATING REPRODUCTIVE TISSUE & ORGANS. THE REGION JUST BELOW THE APICAL MERISTEM IS THE SUB-APICAL MERISTEM – A REGION WHERE VISIBLE DIFFERENTIATION OF CELLS BEGINS. IN THE VASCULAR SYSTEM THE FIRST XYLEM TO APPEAR IS THE PROTO ...
ppt lecture slideshow
... • diffusion of "chemical messenger" (auxins) from tip from darkened side of coleoptile • high concentration of auxin (on darkened side) causes cell elongation on that side => causes curvature away from dark, toward light • if pigment and chemical can’t get from light side to dark side = ...
... • diffusion of "chemical messenger" (auxins) from tip from darkened side of coleoptile • high concentration of auxin (on darkened side) causes cell elongation on that side => causes curvature away from dark, toward light • if pigment and chemical can’t get from light side to dark side = ...
Flower opening and closure: an update
... and the required elongation growth. Ethylene regulates flower opening, together with at least gibberellins and auxin. Ethylene and gibberellic acid often promote and inhibit, respectively, the expression of DELLA genes and the stability of DELLA proteins. DELLA results in growth inhibition. Both hor ...
... and the required elongation growth. Ethylene regulates flower opening, together with at least gibberellins and auxin. Ethylene and gibberellic acid often promote and inhibit, respectively, the expression of DELLA genes and the stability of DELLA proteins. DELLA results in growth inhibition. Both hor ...
IJBT 5(2) 246-248
... L-I NAA was used. In this medium the callus doubled in size every 15 d with routine subcultures. Callus was found to be big, friable and white-pale green in colour. When nodal explants were grown in medium supplemented with low concentrations of NAA (1.0 mg L-') and BAP (0.1 mg L-'), they produced c ...
... L-I NAA was used. In this medium the callus doubled in size every 15 d with routine subcultures. Callus was found to be big, friable and white-pale green in colour. When nodal explants were grown in medium supplemented with low concentrations of NAA (1.0 mg L-') and BAP (0.1 mg L-'), they produced c ...
Plants in Space
... of legumes (beans, peanuts and their relatives), house bacteria that take in nitrogen from air and make it available in a different chemical form for use by the host plant. A plant’s first root, usually called the primary root, originates with the embryo. In dicots and gymnosperms (pine trees and ...
... of legumes (beans, peanuts and their relatives), house bacteria that take in nitrogen from air and make it available in a different chemical form for use by the host plant. A plant’s first root, usually called the primary root, originates with the embryo. In dicots and gymnosperms (pine trees and ...
DORNRÖSCHEN-LIKE, an AP2 gene, is necessary for stamen
... is specified, less is known about what controls the initial morphological appearance of the floral organ primordia. These two processes are separable because mutants that affect floral organ identity specification do not affect the ability of the floral organ primordia to form. For example, in pi mu ...
... is specified, less is known about what controls the initial morphological appearance of the floral organ primordia. These two processes are separable because mutants that affect floral organ identity specification do not affect the ability of the floral organ primordia to form. For example, in pi mu ...
Chapter 35 Presentation-Plant Structure and Growth
... • Are found in the xylem of all vascular plants. • Most angiosperms, a few gymnosperms, and a few seedless vascular plants have vessels. • When the cell dies, a nonliving conduit remains through which water flows. • The secondary cell walls contain lignin. travismulthaupt.com ...
... • Are found in the xylem of all vascular plants. • Most angiosperms, a few gymnosperms, and a few seedless vascular plants have vessels. • When the cell dies, a nonliving conduit remains through which water flows. • The secondary cell walls contain lignin. travismulthaupt.com ...
Genetic nature of a nontumour mutant isolated from tumour
... trait, I shall present experimental evidence and theoretical arguments that suggest that the nontumour condition does not necessarily involve a single dominant gene mutation, but rather ...
... trait, I shall present experimental evidence and theoretical arguments that suggest that the nontumour condition does not necessarily involve a single dominant gene mutation, but rather ...
The shoot apical meristem and development of vascular architecture1
... model comes from experiments demonstrating that an artificial auxin source can induce the formation of a vascular strand within wounded stem tissue (reviewed in Sachs 1981; Lyndon 1990). Numerous physiological experiments have shown that auxin moves basipetally within intact stems (reviewed in Lomax ...
... model comes from experiments demonstrating that an artificial auxin source can induce the formation of a vascular strand within wounded stem tissue (reviewed in Sachs 1981; Lyndon 1990). Numerous physiological experiments have shown that auxin moves basipetally within intact stems (reviewed in Lomax ...
MICROPROPAGATION OF CARLINA ACAULIS L.
... medium with 13.3 μM BA the multiplication rate was 6.1 shoots per explant during 5 subcultures (Tab. 1, Fig. 2b). Grubisić (2004) reported similar multiplication rates. Shoot organogenesis was lower in hypocotyls but rose during subsequent subcultures to an average 4.0 (4.4 μM BA) and 6.1 (13.3 μM B ...
... medium with 13.3 μM BA the multiplication rate was 6.1 shoots per explant during 5 subcultures (Tab. 1, Fig. 2b). Grubisić (2004) reported similar multiplication rates. Shoot organogenesis was lower in hypocotyls but rose during subsequent subcultures to an average 4.0 (4.4 μM BA) and 6.1 (13.3 μM B ...
Cytochrome P450 CYP78A9 Is Involved in
... CYP78A5 showed a higher rate of leaf initiation (Wang et al., 2008). The smaller size of leaves, sepals, and petals in homozygous cyp78a5/klu plants was found to be due to a decreased cell number and not caused by a decreased cell size (Anastasiou et al., 2007). The use of cyp78a5/klu plants, in whi ...
... CYP78A5 showed a higher rate of leaf initiation (Wang et al., 2008). The smaller size of leaves, sepals, and petals in homozygous cyp78a5/klu plants was found to be due to a decreased cell number and not caused by a decreased cell size (Anastasiou et al., 2007). The use of cyp78a5/klu plants, in whi ...
Root system of seabuckthorn (Hippophaë rhamnoides L.)
... P-deficient response. To assess functions of CRs which have a determinate growth pattern, analysis of metabolites and transcripts could display changes towards a Pdeficient metabolism as well as anaerobic metabolism at later developmental stages of CR. As an enzyme central to organic acid metabolism ...
... P-deficient response. To assess functions of CRs which have a determinate growth pattern, analysis of metabolites and transcripts could display changes towards a Pdeficient metabolism as well as anaerobic metabolism at later developmental stages of CR. As an enzyme central to organic acid metabolism ...
PDF - Penn State Extension
... origin along an older branch. Thinning cuts do not induce vegetative growth near the pruning cut and are usually preferred for minimizing tree size and for removing excess shoots. Thinning cuts are also used in older trees as a method of fruiting shoot renewal. When a shoot that fruited the previous ...
... origin along an older branch. Thinning cuts do not induce vegetative growth near the pruning cut and are usually preferred for minimizing tree size and for removing excess shoots. Thinning cuts are also used in older trees as a method of fruiting shoot renewal. When a shoot that fruited the previous ...
The annual cycle of growth of northern highbush blueberry
... The blueberry bush has two types of buds: flower buds and vegetative buds. The flower buds have only flowers in them and the vegetative buds will only form leaves and shoots. Flower buds are big, plump and easy to see and are usually located at and near the shoot tips. The vegetative buds are small ...
... The blueberry bush has two types of buds: flower buds and vegetative buds. The flower buds have only flowers in them and the vegetative buds will only form leaves and shoots. Flower buds are big, plump and easy to see and are usually located at and near the shoot tips. The vegetative buds are small ...
the effect of flowering on adventitious root-formation
... hormone were found to retard the development of flower buds of snapdragons, annual larkspur, blue salvia and Iris. LEOPOLD and THIMANN (41, 1948)were able to increase the number of flower primordia in the L.D. wintex barley by infiltrating through the cut leaf tips indole acetic or naphthalene aceti ...
... hormone were found to retard the development of flower buds of snapdragons, annual larkspur, blue salvia and Iris. LEOPOLD and THIMANN (41, 1948)were able to increase the number of flower primordia in the L.D. wintex barley by infiltrating through the cut leaf tips indole acetic or naphthalene aceti ...
The Plant Vascular System: A Macromolecular Information
... Gravity is the most constant environmental factor which influences both ontogeny as well as phylogeny, and in particular the diversity, of land living organisms. As prominent mechanical signal, gravity controls a large number of plant genes belonging to different categories, including signalling, me ...
... Gravity is the most constant environmental factor which influences both ontogeny as well as phylogeny, and in particular the diversity, of land living organisms. As prominent mechanical signal, gravity controls a large number of plant genes belonging to different categories, including signalling, me ...
Developmental transitions: integrating
... two phases, morphogenesis (embryo and endosperm development) and maturation. Maturation ensures that the fully developed embryo accumulates sufficient storage compounds, while water content decreases and abscisic acid (ABA) levels increase. Finally, the seed acquires desiccation tolerance and enters ...
... two phases, morphogenesis (embryo and endosperm development) and maturation. Maturation ensures that the fully developed embryo accumulates sufficient storage compounds, while water content decreases and abscisic acid (ABA) levels increase. Finally, the seed acquires desiccation tolerance and enters ...
The strawberry gene FaGAST affects plant growth through inhibition
... from 30 to 40 d after anthesis. The growth of the receptacle is due to a combination of cell division and cell enlargement (Havis, 1943). During the first 10 d after anthesis, growth in the strawberry receptacle is primarily due to cell division (Cheng and Breen, 1992). Between 10 d and 15 d after a ...
... from 30 to 40 d after anthesis. The growth of the receptacle is due to a combination of cell division and cell enlargement (Havis, 1943). During the first 10 d after anthesis, growth in the strawberry receptacle is primarily due to cell division (Cheng and Breen, 1992). Between 10 d and 15 d after a ...
FOLIA POMERANAE UNIVERSITATIS TECHNOLOGIAE
... approximately 2025 species with a wide range of uses, but only a few of these attractive species have been used for developing new horticultural crops (Ascough et al. 2009, Ahouran et al. 2012). The exceptional variety of flower and leaf shape, size and colour make this family an ideal resource for ...
... approximately 2025 species with a wide range of uses, but only a few of these attractive species have been used for developing new horticultural crops (Ascough et al. 2009, Ahouran et al. 2012). The exceptional variety of flower and leaf shape, size and colour make this family an ideal resource for ...
Biojeopardy plant form and function
... of roots and in the buds of shoots that supplies cells for the plant to grow in length. ...
... of roots and in the buds of shoots that supplies cells for the plant to grow in length. ...
INTRODUCTION
... female flowers of the same, as well as of different plants. And the most of the floral parts of bisexual flowers were bigger than those of the male and female flowers. Organogenesis in teaselgourd (Momordica dioica Roxb.) has been studied by the Nabi et al. (2002). In their study they took four type ...
... female flowers of the same, as well as of different plants. And the most of the floral parts of bisexual flowers were bigger than those of the male and female flowers. Organogenesis in teaselgourd (Momordica dioica Roxb.) has been studied by the Nabi et al. (2002). In their study they took four type ...
Arabidopsis thaliana AS A TOOL TO TEACH PLANT GENETICS
... In the second module, the concept of the influence of environmental conditions and other factors on Arabidopsis growth and development will be introduced. Students will observe the influence of light, temperature (chilling and heating), water supply, gravity, salt concentration and heavy ...
... In the second module, the concept of the influence of environmental conditions and other factors on Arabidopsis growth and development will be introduced. Students will observe the influence of light, temperature (chilling and heating), water supply, gravity, salt concentration and heavy ...
The Plant Body
... Primary growth—lengthening of shoots and roots; branching. Results in nonwoody tissues—herbaceous Secondary growth—increase in thickness Woody plants have a secondary plant body consisting of wood and bark. ...
... Primary growth—lengthening of shoots and roots; branching. Results in nonwoody tissues—herbaceous Secondary growth—increase in thickness Woody plants have a secondary plant body consisting of wood and bark. ...
Auxin
Auxins (plural of auxin /ˈɔːksɨn/) are a class of plant hormones (or plant growth substances) with some morphogen-like characteristics. Auxins have a cardinal role in coordination of many growth and behavioral processes in the plant's life cycle and are essential for plant body development. Auxins and their role in plant growth were first described by the Dutch scientist Frits Warmolt Went. Kenneth V. Thimann isolated this phytohormone and determined its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.