Using Validamycin A for Salinity Stress Mitigation in Two Rice Varieties Differing in Their Salt Tolerance Level
Tahany A. Hathout; Samia M. El-Khallal; abdelgawad, zinab; Eglal M. Said; Alshaimaa Z. Al Mokadem;
Abstract
WE PRESENT here the comparative protective potentiality of
exogenously applied validamycin A, a potent inhibitor of
trehalase as seed soaking prior to sowing in saline soil with salinity
level (EC 10.06 dS/m) in mitigating NaCl toxicity and inducing
salinity tolerance in two rice (Oryza sativa L.) cultivars (cv.), Sakha
103 (salt-sensitive) and Agami M5 (salt-tolerant). Salinity stress
decreased starch and total soluble protein contents concomitantly with
increasing total soluble sugars, proline and free amino acids in both
cultivars. Validamycin A decreased the activity of trehalase which
leads to the accumulation of trehalose in both cultivars of rice plants.
Raising trehalose level in the plant tissues was accompanied by
increasing the starch and protein content and appearance of new
protein pattern of both cultivars. Application of validamycin A
increased grain yield, 1000-grain weight and filled-grain percentage
for both rice cultivars under saline field conditions. Soaking rice seeds
with 30μM of validamycin A could alleviate the harmful effects of
salinity stress.
exogenously applied validamycin A, a potent inhibitor of
trehalase as seed soaking prior to sowing in saline soil with salinity
level (EC 10.06 dS/m) in mitigating NaCl toxicity and inducing
salinity tolerance in two rice (Oryza sativa L.) cultivars (cv.), Sakha
103 (salt-sensitive) and Agami M5 (salt-tolerant). Salinity stress
decreased starch and total soluble protein contents concomitantly with
increasing total soluble sugars, proline and free amino acids in both
cultivars. Validamycin A decreased the activity of trehalase which
leads to the accumulation of trehalose in both cultivars of rice plants.
Raising trehalose level in the plant tissues was accompanied by
increasing the starch and protein content and appearance of new
protein pattern of both cultivars. Application of validamycin A
increased grain yield, 1000-grain weight and filled-grain percentage
for both rice cultivars under saline field conditions. Soaking rice seeds
with 30μM of validamycin A could alleviate the harmful effects of
salinity stress.
Other data
| Title | Using Validamycin A for Salinity Stress Mitigation in Two Rice Varieties Differing in Their Salt Tolerance Level | Authors | Tahany A. Hathout ; Samia M. El-Khallal ; abdelgawad, zinab ; Eglal M. Said ; Alshaimaa Z. Al Mokadem | Keywords | Keywords: Salinity, Yield, Trehalose, Protein patterns . | Issue Date | 2015 | Journal | Egypt. J. Agron. |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.