Low light stress influences resistant starch content and Glycemic index of rice ( O. sativa L)
2019; Wiley; Linguagem: Inglês
10.1002/star.201800216
ISSN2192-4236
AutoresAwadhesh Kumar, Darshan Panda, Monalisha Biswal, Prajjal Dey, Lambodar Behera, M. J. Baig, Lopamudra Nayak, Umakanta Ngangkham, Srigopal Sharma,
Tópico(s)GABA and Rice Research
ResumoStarch - StärkeVolume 71, Issue 5-6 1800216 Research Article Low Light Stress Influences Resistant Starch Content and Glycemic Index of Rice (O. sativa L) Awadhesh Kumar, Corresponding Author Awadhesh Kumar awadh_iari@yahoo.com orcid.org/0000-0002-4428-1030 Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorDarshan Panda, Darshan Panda Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorMonalisha Biswal, Monalisha Biswal Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorPrajjal Dey, Prajjal Dey Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorLambodar Behera, Lambodar Behera Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorMirja Jaynul Baig, Mirja Jaynul Baig Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorLopamudra Nayak, Lopamudra Nayak Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorUmakanta Ngangkham, Umakanta Ngangkham Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorSrigopal Sharma, Srigopal Sharma Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this author Awadhesh Kumar, Corresponding Author Awadhesh Kumar awadh_iari@yahoo.com orcid.org/0000-0002-4428-1030 Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorDarshan Panda, Darshan Panda Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorMonalisha Biswal, Monalisha Biswal Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorPrajjal Dey, Prajjal Dey Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorLambodar Behera, Lambodar Behera Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorMirja Jaynul Baig, Mirja Jaynul Baig Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorLopamudra Nayak, Lopamudra Nayak Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorUmakanta Ngangkham, Umakanta Ngangkham Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this authorSrigopal Sharma, Srigopal Sharma Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, PO- Bidyadharpure, Cuttack 753006, Odisha, IndiaSearch for more papers by this author First published: 05 February 2019 https://doi.org/10.1002/star.201800216Citations: 6Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Low light (LL) stress is an important abiotic stress of wet season which adversely affects starch biosynthesis and results in drastic reduction in rice grain yield. In general, the grain yield decreases together with reduction in the amylose (AC) and resistant starch (RS) contents while the glycemic index (GI) values increased in plants exposed to LL stress. This is the first report of the effect of LL stress on RS and GI values. In the present investigation, 14 rice genotypes are studied for the effect of LL stress on AC, RS, and GI of the grains. Rice genotypes, Purnendu and Shashi differ in exhibiting relatively much lower reduction in AC and RS and hence little change in their GI values under LL stress, while wide variation is observed for the rest of the genotypes. The grain yields of Purnendu and Shashi are also not much affected by the LL stress. There is a dramatic increase in the expression levels of the gbssI in the middle stage of grain development in the two genotypes (Purnendu and Mahisugandha with contrasting RS, AC, and GI). Maximum expression of the gene was observed in Purnendu at middle stage showing a positive correlation between RS and gbssI expression. As rice is grown mainly in wet season, the identification of rice genotypes which do not permit much change in RS value when grown under LL and hence no significant increase in the GI value, would help to develop better rice varieties for consumption by diabetics. Conflicts of Interest The authors declare no conflict of interest. Citing Literature Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Filename Description star201800216-sup-0001-SuppData-S1.pdf350.5 KB Supporting Data S1. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume71, Issue5-6May 20191800216 RelatedInformation
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