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Thursday, July 9, 2020 | History

3 edition of The study of stress responses in meristematic tissues found in the catalog.

The study of stress responses in meristematic tissues

Ping Zhong

The study of stress responses in meristematic tissues

by Ping Zhong

  • 377 Want to read
  • 15 Currently reading

Published .
Written in English

    Subjects:
  • Heat shock proteins.,
  • Plant physiology.

  • Edition Notes

    Statementby Ping Zhong.
    Classifications
    LC ClassificationsMicrofilm 94/2570 (Q)
    The Physical Object
    FormatMicroform
    Paginationxii, 142 leaves
    Number of Pages142
    ID Numbers
    Open LibraryOL1242051M
    LC Control Number94628805

    The Vp1 promoter is active in the embryo and aleurone cells of developing seeds and, upon drought stress, was also found in phloem cells of vegetative tissues, including cobs, leaves, and stems. Sequence analysis of the Vp1 promoter identified a potential ABA-responsive complex, consisting of an ACGT-containing ABA response element (ABRE) and a.   In this study, we hand dissected three types of tissues than contain meristematic tissues corresponding to shoot apical meristem (SAM), flower meristem (FM), and receptacle meristem (REM), in F. vesca for RNA-seq analyses. A total of 3, differentially expressed genes (DEGs) were identified through pairwise comparisons.

    Activates tropic responses. Controls aging and senescence, dormancy of seeds. Synthetic auxins are extensively used as herbicides, the most widely known being 2,4‐D and the notorious 2,4,5‐T, which were used in a combination as Agent Orange during the Vietnam War and sprayed over the Vietnam forests as a defoliant. A recent study showed that a gradient of moisture generated by water stress causes an immediate degradation of amyloplasts in the columella cells of plant roots, producing a minor response to gravity and an increase of hydrotropism. However, it is unknown how the gravity signals interact with other environmental signals to modulate the.

    Yet, GO ontology analysis of the transcriptome in this study (Supplemental Data Set 3) confirms similar global stress response to earlier reports (Shao et al., ), with categories altered for response to cold, wounding, oxidative stress, response to hormones (jasmonic acid, auxin, gibberellin, and ABA) and circadian rhythm. Analysis of sequences with similar expression patterns in both S[H] and Ph[H] tissues that are involved in the regulation of transcription (% of total clones in SPh[H], Fig. 3) resulted in functions similar to those already described: regulation of tissue differentiation (%), and stress responses (%), were the main activities.


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The study of stress responses in meristematic tissues by Ping Zhong Download PDF EPUB FB2

Lawn grasses and other monocots have an intercalary meristem, which is a region of meristematic tissue at the base of the leaf blade. This is beneficial to the plant because it can continue to grow even when the tip of the plant is removed by grazing or mowing.

In plant biology, the term "meristematic tissue" refers to the living tissues containing undifferentiated cells that are the building blocks of all specialized plant structures. The zone where these cells exist is known as the "meristem." This zone contains the cells that actively divide and create specialized structures such as the cambium layer, the buds of leaves and flowers, and the tips.

Meristematic tissues, or simply meristems, are tissues in which the cells remain forever young and divide actively throughout the life of the a meristematic cell divides in two, the new cell that remains in the meristem is called an initial, the other the new cells are added by repeated mitotic divisions of the initial cells, the derivatives are pushed farther away.

This process was performed in the meristematic tissues of the cells of the permanent Caraway (Carum carvi) and were experimental factors (waterstress factor for 8 days with control period of 4.

An increase in the cellular concentration of free proline is a common response of many plants to various types of environmental stress. In this study, we monitored the accumulation of proline and the activities of Δ 1-pyrrolinecarboxylate synthetase (P5CS) and Δ 1-pyrrolinecarboxylate reductase (P5CR), the key enzymes of proline biosynthesis, in different parts of 4-day-old seedlings Cited by: 4.

physiology of stress. This chapter will take you through some basic concepts that ex-plain the physiological dynamics involved with the stress response—specifically, the immediate, intermediate, and prolonged effects on the body.

These processes will be explained in terms of “pathways,” which set in action the systematic and integrative. Presents an overview of the role of meristematic tissues in plant growth and development.

A valuable resource for plant geneticists, developmental biologists, and molecular biologists. Meristematic Tissue in Plants. Meristematic tissue or meristems, as they are also called are tissues that have the ability to enlarge, stretch and differentiate into other types of cells as they mature.

The cells of this tissue are generally young and immature, with the power of continuous division. Meristematic cells are all living cells. → Plant Tissues are of two types Meristematic & Permanent tissues. Meristematic Tissue → These are simple living tissues having thin walled compactly arranged immature cells which are capable of division and formation of new cells.

Features of Meristematic tissues. RSS1 is controlled in a cell cycle phase-dependent manner. We molecularly identified RSS1 by transposon tagging and the subsequent isolation and characterization of two additional mutant alleles (Fig.

2a). Tos17 ( kb) was inserted into the third exon of RSS1 in rss and rss and into the fourth intron in rssA full-length RSS1 cDNA driven by the rice actin or RSS1 promoter was able.

In our study, we compared the results of edgeR, DESeq2, and the expression of many REM family members is observed in meristematic tissues, such as the inflorescence meristem, floral meristem, including response to stress (GO) and response to wounding (GO). In this study, we hand dissected three types of tissues than contain meristematic tissues corresponding to shoot apical meristem (SAM), flower meristem (FM), and receptacle meristem (REM), in F.

In biology, tissue is a cellular organizational level between cells and a complete organ.A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

The English word "tissue" derives from the French word "tissu", meaning that something. The genes that control the stress response keep most people on a fairly steady emotional level, only occasionally priming the body for fight or flight.

Overactive or underactive stress responses may stem from slight differences in these genes. Life experiences. Strong stress reactions sometimes can be traced to traumatic events. During their life cycle, plants may experience oxygen deprivation due to flooding of the soil or to the anatomical structure of some tissues whose histological properties (e.g., densely packed cells) severely limit the permeability to oxygen, such as in tubers, vascular cambium of trees, meristematic tissues, developing seeds, etc.

This study was undertaken to assess the impact of the arsenite exposure on the ROS generation in meristem cells of Allium cepa, the role of NADPH-oxidase like enzyme in such ROS formation and also to study the impact of arsenic (III) on the genetic material of the cell i.e DNA.

Materials and methods Root meristematic tissues have been found to contain patterns for histone H4 lysine 5 acetylation, histone H3 lysine 4 and 9 di methylation and DNA methylation as 5-methyl cytosine.

So far, only a casual correlation between epigenetic marks and tissue types has been established and further study is required to understand the exact involvement. The development of gall shapes has been attributed to the feeding behavior of the galling insects and how the host tissues react to galling stimuli, which ultimately culminate in a variable set of structural responses.

A superhost of galling herbivores, Copaifera langsdorffii, hosts a bizarre “horn-shaped” leaflet gall morphotype induced by an unidentified species of Diptera: Cecidomyiidae.

The interfascicular cambium is formed from the parenchyma in the pith rays between the vascular bundles; this process of a mature tissue becoming meristematic is called dedifferentiation, it is extremely important because allows the plant to cover wounds with non-living cork.

Water stress exists in most sugarcane cultivation areas, which are not supported by irrigation system and have low rain precipitation. Better understanding of physiological and biochemical mechanism, underlying plants response to water stress, have been achieved to develop drought-tolerant plants by biotechnology approach.

To survive and grow normally, plants use a range of strategies to. Plant Growth and Development – Important Points, Summary, Revision, Highlights Plant Growth and Development. Growth: It is a quantitative parameter and refers to an irreversible increase in size or weight of a cell, tissue or are capable of growing throughout their life due to meristematic tissues present in certain parts.Meristematic tissues consist of three types, based on their location in the plant.

Apical meristems contain meristematic tissue located at the tips of stems and roots, which enable a plant to extend in length. Lateral meristems facilitate growth in thickness or girth in a maturing plant.link CpG islands and GC content dictate nucleosome depletion in a transcription independent manner at mammalian promoters (ChIP-seq) link Comparative genomics analysis of Aspergillus glaucus CCHA provides insights into the adaptation of stress response link Expression analysis of meristematic tissue (Me) and young leaves (Le) isolated by manual.