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Sorghum in dryland: morphological, physiological, and molecular responses of sorghum under drought stress

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
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:
Type of IDID
DOI10.1007/s00425-021-03799-7
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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