Abreha, Kibrom Berhe and Enyew, Muluken Birara and Carlsson, Anders S. and Ramesh, Vetukuri and Feyissa, Tileye and Motlhaodi, Tiny and Ng’uni, Dickson and Geleta, Mulatu Dida
(2021).
Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress.
Planta. 255
, 20
[Article Review/Survey]
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Abstract
Sorghum is an economically important and a staple food crop for over half a billion people in developing countries, mostly in arid and semi-arid regions where drought stress is a major limiting factor. Although sorghum is generally considered tolerant, drought stress still signifcantly hampers its productivity and nutritional quality across its major cultivation areas. Hence, understanding both the efects of the stress and plant response is indispensable for improving drought tolerance of the crop. This review aimed at enhancing our understanding and provide more insights on drought tolerance in sorghum as a contribution to the development of climate resilient sorghum cultivars. We summarized fndings on the efects of drought on the growth and development of sorghum including osmotic potential that impedes germination process and embryonic structures, photosynthetic rates, and imbalance in source-sink relations that in turn afect seed flling often manifested in the form of substantial reduction in grain yield and quality. Mechanisms of sorghum response to drought-stress involving morphological, physiological, and molecular alterations are presented. We highlighted the current understanding about the genetic basis of drought tolerance in sorghum, which is important for maximizing utilization of its germplasm for development of improved cultivars. Furthermore, we discussed interactions of drought with other abiotic stresses and biotic factors, which may increase the vulnerability of the crop or enhance its tolerance to drought stress. Based on the research reviewed in this article, it appears possible to develop locally adapted cultivars of sorghum that are drought tolerant and nutrient rich using modern plant breeding techniques.
Authors/Creators: | Abreha, Kibrom Berhe and Enyew, Muluken Birara and Carlsson, Anders S. and Ramesh, Vetukuri and Feyissa, Tileye and Motlhaodi, Tiny and Ng’uni, Dickson and Geleta, Mulatu Dida | ||||
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Title: | Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress | ||||
Series Name/Journal: | Planta | ||||
Year of publishing : | 2021 | ||||
Volume: | 255 | ||||
Article number: | 20 | ||||
Number of Pages: | 23 | ||||
ISSN: | 0032-0935 | ||||
Language: | English | ||||
Publication Type: | Article Review/Survey | ||||
Article category: | Scientific peer reviewed | ||||
Version: | Published version | ||||
Copyright: | Creative Commons: Attribution 4.0 | ||||
Full Text Status: | Public | ||||
Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science | ||||
Keywords: | drought tolerance, germplasm, grain quality, sorghum, source-sink relations | ||||
URN:NBN: | urn:nbn:se:slu:epsilon-p-114917 | ||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114917 | ||||
Additional ID: |
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ID Code: | 26338 | ||||
Faculty: | LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap | ||||
Department: | (LTJ, LTV) > Department of Plant Breeding (from 130101) | ||||
Deposited By: | SLUpub Connector | ||||
Deposited On: | 17 Dec 2021 14:25 | ||||
Metadata Last Modified: | 17 Dec 2021 14:31 |
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