Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage
Salinity tolerance levels and physiological changes were evaluated for twelve rice cultivars, including four white rice and eight black glutinous rice cultivars, during their seedling stage in response to salinity stress at 100 mM NaCl. All the rice cultivars evaluated showed an apparent decrease in...
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doaj-21e36796601c4443807d134951131a392020-11-24T21:36:57ZengElsevierSaudi Journal of Biological Sciences1319-562X2016-07-0123446747710.1016/j.sjbs.2015.05.013Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stageSumitahnun Chunthaburee0Anoma Dongsansuk1Jirawat Sanitchon2Wattana Pattanagul3Piyada Theerakulpisut4Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, ThailandDepartment of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, ThailandSalinity tolerance levels and physiological changes were evaluated for twelve rice cultivars, including four white rice and eight black glutinous rice cultivars, during their seedling stage in response to salinity stress at 100 mM NaCl. All the rice cultivars evaluated showed an apparent decrease in growth characteristics and chlorophyll accumulation under salinity stress. By contrast an increase in proline, hydrogen peroxide, peroxidase (POX) activity and anthocyanins were observed for all cultivars. The K+/Na+ ratios evaluated for all rice cultivars were noted to be highly correlated with the salinity scores thus indicating that the K+/Na+ ratio serves as a reliable indicator of salt stress tolerance in rice. Principal component analysis (PCA) based on physiological salt tolerance indexes could clearly distinguish rice cultivars into 4 salt tolerance clusters. Noteworthy, in comparison to the salt-sensitive ones, rice cultivars that possessed higher degrees of salt tolerance displayed more enhanced activity of catalase (CAT), a smaller increase in anthocyanin, hydrogen peroxide and proline content but a smaller drop in the K+/Na+ ratio and chlorophyll accumulation.http://www.sciencedirect.com/science/article/pii/S1319562X1500114XAntioxidant enzymesAnthocyaninsRiceSalt stress |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sumitahnun Chunthaburee Anoma Dongsansuk Jirawat Sanitchon Wattana Pattanagul Piyada Theerakulpisut |
spellingShingle |
Sumitahnun Chunthaburee Anoma Dongsansuk Jirawat Sanitchon Wattana Pattanagul Piyada Theerakulpisut Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage Saudi Journal of Biological Sciences Antioxidant enzymes Anthocyanins Rice Salt stress |
author_facet |
Sumitahnun Chunthaburee Anoma Dongsansuk Jirawat Sanitchon Wattana Pattanagul Piyada Theerakulpisut |
author_sort |
Sumitahnun Chunthaburee |
title |
Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
title_short |
Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
title_full |
Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
title_fullStr |
Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
title_full_unstemmed |
Physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
title_sort |
physiological and biochemical parameters for evaluation and clustering of rice cultivars differing in salt tolerance at seedling stage |
publisher |
Elsevier |
series |
Saudi Journal of Biological Sciences |
issn |
1319-562X |
publishDate |
2016-07-01 |
description |
Salinity tolerance levels and physiological changes were evaluated for twelve rice cultivars, including four white rice and eight black glutinous rice cultivars, during their seedling stage in response to salinity stress at 100 mM NaCl. All the rice cultivars evaluated showed an apparent decrease in growth characteristics and chlorophyll accumulation under salinity stress. By contrast an increase in proline, hydrogen peroxide, peroxidase (POX) activity and anthocyanins were observed for all cultivars. The K+/Na+ ratios evaluated for all rice cultivars were noted to be highly correlated with the salinity scores thus indicating that the K+/Na+ ratio serves as a reliable indicator of salt stress tolerance in rice. Principal component analysis (PCA) based on physiological salt tolerance indexes could clearly distinguish rice cultivars into 4 salt tolerance clusters. Noteworthy, in comparison to the salt-sensitive ones, rice cultivars that possessed higher degrees of salt tolerance displayed more enhanced activity of catalase (CAT), a smaller increase in anthocyanin, hydrogen peroxide and proline content but a smaller drop in the K+/Na+ ratio and chlorophyll accumulation. |
topic |
Antioxidant enzymes Anthocyanins Rice Salt stress |
url |
http://www.sciencedirect.com/science/article/pii/S1319562X1500114X |
work_keys_str_mv |
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