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Volume10, Issue 12 (Suppl)
J Proteomics Bioinform, an open access journal
ISSN: 0974-276X
Page 105
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World Biomarkers & Pharma Biotech 2017
December 07-09, 2017
December 07-09, 2017 | Madrid, Spain
&
20
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International Conference on
PHARMACEUTICAL BIOTECHNOLOGY
9
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WORLD BIOMARKERS CONGRESS
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J Proteomics Bioinform 2017, 10:12(Suppl)
DOI: 10.4172/0974-276X-C1-110
Hormonal regulation of fructan content of wheat seedlings during severe drought stress and recovery
Farnoosh Nemati and Faezeh Ghanati
Tarbiat Modares University, Iran
F
ructans as a major store of carbohydrates in wheat are involved in the protection of plants during drought. phytohormone
extensively interact with each other and might counteract the negative effects of water stress exerted on carbohydrate metabolism
and promote the whole plant growth. In the present study the relationship between fructan content and phytohormones was evaluated
in 4-day old seedlings of a drought-tolerant (Sirvan) and a drought-sensitive (Marvdasht) wheat cultivar exposed to seven days water
cessation and subsequent re-watering. In comparison with sensitive cultivar, the tolerant one accumulated more fructan (3.56±0.3
mg/g FW). Analysis of phytohormon contents showed that drought stress remarkably increased the level of abscisic acid (ABA) of
tolerant cultivar (~ 7 fold) higher than of sensitive one. Under water cessation, the level of gibberellic acid (GA) content decreased in
both cultivars, while the extents in tolerant one was lower. After drought stress the content of indole acetic acid (IAA) did not show
significant change in both cultivars. All together, the results suggest a close relation between the dynamics of phtytohormones (ABA,
IAA, GA) and fructan synthesis plays a crucial role in the tolerance of wheat seedling against drought stress conditions.
farnoosh.nemati@modares.ac.ir