Meristem

Hormone clue to root growth

... the zone of cell proliferation. Plants in which the cells in the meristem were made to express a mutant version of the growth-repressing protein GAI ... innermost layer of the root cortex of a plant), was sufficient to stop the meristem enlarging. In effect, the rate of expansion of dividing endodermal cells ...

The bonsai effect: Wounded plants make jasmonates, inhibiting cell division, stunting growth

... of the model plant Arabidopsis are wounded, cell division in the apical meristem is reduced, growth of the plant is arrested within days, and the new ... Unexpectedly, the suppression of cell division in the apical meristem occurs through a signal pathway initiated by the wound hormone, jasmonate, ...

UCR scientists identify stem-cell genes that help form plant organs

... RIVERSIDE, Calif. Plant stem-cells are master cells located at the tip of the stem and are part of a structure called the shoot apical meristem (SAM). Here, the stem cellsall clumped togetherdivide throughout the life of the plant to give rise to other cells, resulting in the formation of ...

Researchers find an essential gene for forming ears of corn

... auxin transport, we found, interestingly, that the transport of auxin and biosynthesis work together in a synergistic manner to regulate how the meristem and lateral organs of the maize plant develop." ...

Genetic snooze button governs timing of spring flowers

... to the cold triggers a process in plants known as vernalization, where the meristem - a region on the growing point of a plant where rapidly dividing cells ... because they possess a gene that blocks flowering," Amasino explains. "The meristem is where the repressor (gene) is expressed and is where it is shut off." ...

The evolution of food plants: Genetic control of grass flower architecture

... the tassel (male pollen-bearing flowers) and the ear (female flowers and site of seed or kernel development). The tassel forms from the shoot apical meristem after the production of a defined number of leaves, whereas ears form at the tips of compact axillary branches. Normal maize ears are unbranched, and ...

Max Planck researchers make a breakthrough in plant stem cell research

... University of Tübingen, Germany about a decade ago. Here it was shown that a gene called WUSCHEL has a key influence on how many cells in the apical meristem actually stay stem cells. However, until now, it was unclear how hormones and regulatory genes, such as WUSCHEL work together to maintain this fine ...

Meristem in Biological Definition

Phloem

... RNAs are transported in the phloem through sieve tube elements . Phloem is produced in phases. Primary phloem is laid down by the apical meristem . Secondary phloem is laid down by the vascular cambium to the inside of the established layer(s) of phloem. ...

Xylem

... and xylem cells. In perennial plants , xylem is laid down in multiple phases. Primary xylem is one of the tissues left behind by the apical meristem . Secondary xylem is laid down by vascular cambium on the outside of the xylem column. Contents The xylem sap consists mainly of water and ...

Meristem in Biological Dictionary

Secondary xylem

... ... in secondary xylem , laid down by a meristem called the vascular cambium in woody ... ... ... in secondary xylem , laid down by a meristem called the vascular cambium. ... Secondary ... ... in secondary xylem , laid down by a meristem called the ... Encyclopedia article about ...

Meristem

... A meristem is the tissue in all plants consisting of ... ON UNILEVER NIGERIA PLC (MARCH 26, 2009) ... meristem ( ) n. The undifferentiated plant tissue ... as that at ... from differentiated lateral meristem are known as secondary ... apical ...

Leaf primordia

... ... any meristem are minute primordia that resemble knobby ... n. A lateral outgrowth from the apical meristem that develops into a leaf . ... Rotate maple ... before it actually switches over to ... meristem produces its series of leaf primordia , then ...

Lateral meristem

... (Redirected from Lateral meristem ) Jump to: navigation, search ... These ... they are ... Aspects of the topic lateral - meristem are discussed in the following places at ... growth. ... cambium, the first type of lateral meristem , is sometimes just called the cambium. ... ...

Ground tissue

... found in plants develop from ground tissue meristem and consists of three simple tissues: ground ... Von Spain, Chaostic Magic, ... 3) Ground meristem - gives rise to ground tissue ... 1. Ground ... meristem, and procambium. ... The ground meristem forms the pith and cortex tissues of the ...

Cork cambium

... the periderm. The cork cambium is a lateral meristem and is responsible for secondary growth that ... periderm. The cork cambium is a lateral meristem and is responsible for secondary growth ... ... ... The cork cambium is a lateral meristem and is responsible for secondary growth ... ...

Apical meristem

... A meristem is the tissue in all plants consisting of ... can take place. Aspects of the topic apical - meristem are discussed in the following places at ... cap. Just behind the root cap lies the apical meristem , a tissue of actively dividing cells. Some of ...

Xylem

... of transport tissue in plants, ... in secondary xylem , laid down by a meristem called the vascular cambium ... Best Value on Xylem Vanities. Find ... the xylem towards the leaves. ... in secondary xylem , laid down by a meristem called the vascular cambium ... Xylem summary with 7 pages of ...

Secondary growth

... is the result of the activity of the vascular cambium. The latter is a meristem that divides to produce secondary xylem cells on the inside of the meristem and secondary phloem cells on the outside . This growth increases ...

Primary root

... seed, developing from the radicle of ... Cells derived from the apical meristem add to the primary growth of the root . ... The root apical meristem gives rise to three primary meristems: protoderm, ... radicle of the ...

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