محلول های دیواره سلولی ریشه گیاهان زراعی
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محلول های دیواره سلولی ریشه گیاهان زراعی

عنوان فارسی مقاله: محلول های دیواره سلولی ریشه گیاهان زراعی در خاک های شور
عنوان انگلیسی مقاله: Root cell wall solutions for crop plants in saline soils
مجله/کنفرانس: Plant Science
رشته های تحصیلی مرتبط:  زیست شناسی، شیمی، کشاورزی
گرایش های تحصیلی مرتبط:  علوم سلولی و مولکولی، علوم گیاهی، شیمی خاک، علوم خاک
کلمات کلیدی فارسی: غیرزنده، آپوپلاسم، محصول زراعی، نمک
کلمات کلیدی انگلیسی: Abiotic, Apoplasm, Crop, Salt
نوع نگارش مقاله: مقاله مروری (Review Article)
نمایه: Scopus - Master Journals - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.plantsci.2017.12.012
دانشگاه: Plant Transport and Signalling Group, Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA, 5064, Australia
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2018
ایمپکت فاکتور: 3.927 در سال 2017
شاخص H_index: 123 در سال 2019
شاخص SJR: 1.667 در سال 2017
شناسه ISSN: 0168-9452
شاخص Quartile (چارک): Q1 در سال 2017
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 9
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
کد محصول: E11845
فهرست انگلیسی مطالب

Abstract


1. Introduction


2. Na+ can bind to cell wall constituents


3. Changes in the chemical composition of root cell walls in response to salt treatments


4. Changes in cell wall function due to salinity


5. Root diffusion barriers and changes in salinity


6. Salt interactions with cell wall proteins


7. Future prospects


Acknowledgements


References

نمونه متن انگلیسی مقاله

Abstract


The root growth of most crop plants is inhibited by soil salinity. Roots respond by modulating metabolism, gene expression and protein activity, which results in changes in cell wall composition, transport processes, cell size and shape, and root architecture. Here, we focus on the effects of salt stress on cell wall modifying enzymes, cellulose microfibril orientation and non-cellulosic polysaccharide deposition in root elongation zones, as important determinants of inhibition of root elongation, and highlight cell wall changes linked to tolerance to salt stressed and water limited roots. Salt stress induces changes in the wall composition of specific root cell types, including the increased deposition of lignin and suberin in endodermal and exodermal cells. These changes can benefit the plant by preventing water loss and altering ion transport pathways. We suggest that binding of Na+ ions to cell wall components might influence the passage of Na+ and that Na+ can influence the binding of other ions and hinder the function of pectin during cell growth. Naturally occurring differences in cell wall structure may provide new resources for breeding crops that are more salt tolerant.


Introduction


Plant evolution has resulted in a large array of mechanisms to tolerate the stresses associated with increased soil salinity. However, for most cereal crops the growth of roots is disrupted when soil salinity exceeds 4 dS/m, equivalent to about 40 mM NaCl. Increased soil salinity exposes plants to ionic sodium (Na+) and chloride (Cl−), which leads to a cascade of responses in the plant due to the ionic and osmotic components of salt stress [1,2].


Salt stress can indirectly affect cell wall properties by causing changes in gene expression, but Na+ can also physically interact with the cell wall components directly, and change their chemical properties [3]. An increase in soil salinity results in accumulation of Na+ in the apoplast, which can lead to an increase in interactions between Na+ and negatively charged sites within cell wall polymers, and also influence apoplastic pH. Salinity causes transient alkalinisation of the apoplast, and this could limit growth in the context of the acid growth theory [4,5]: Auxin activates plasma membrane H+-ATPases and protons are extruded into the apoplast, apoplastic acidification induces cell wall loosening by activating expansins and other remodelling enzymes resulting in loosening of the cell wall. Hence, growth could be limited by a decrease in free apoplastic protons causing a shift in the apoplastic pH away from the range that favors cell-wall loosening [4], although in maize the inhibition of growth as a result of salinity was not associated with the capacity of the epidermal cells to acidify their walls [6].

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