Response of Sorghum to Abiotic Stresses: A Review

Tari, Irma; Laskay, G.; Takács, Zoltan; Poór, Péter

doi:10.1111/jac.12017

Cited by 141 publications

(107 citation statements)

References 83 publications

Supporting

Mentioning

101

Contrasting

Unclassified

Order By: Relevance

“…Sorghum and some millets are tolerant of low soil fertility and drought in comparison to other cereals, and so are widely grown in areas with unreliable rainfall and few inputs in Sub-Saharan Africa and parts of South Asia (Garí 2002;Waddington et al 2010), often on ecologicallyfragile land (Tari et al 2013). Shortened fallows and expansion onto marginal lands with little use of fertilizer has led to declining soil fertility and yields on sorghum/millet plots (Clay 2004).…”

Section: Sorghum/millets Crop X Environment Interactionsmentioning

confidence: 99%

Environmental impacts and constraints associated with the production of major food crops in Sub-Saharan Africa and South Asia

Waddington²,

et al. 2015

View full text Add to dashboard Cite

Many environmental factors constrain the production of major food crops in Sub-Saharan Africa and South Asia. At the same time, these food production systems themselves have a range of negative impacts on the environment. In this paper we review the published literature and assess the depth of recent research (since 2000) on crop x environment interactions for rice, maize, sorghum/millets, sweetpotato/yam and cassava in these two regions. We summarize current

show abstract

Section: Sorghum/millets Crop X Environment Interactionsmentioning

confidence: 99%

Environmental impacts and constraints associated with the production of major food crops in Sub-Saharan Africa and South Asia

Waddington²,

et al. 2015

View full text Add to dashboard Cite

show abstract

“…As well known, salt priming can availably improve plant tolerance to salt stress (Amzallag et al 1990;Djanaguiraman et al 2006;Saha et al 2010Saha et al , 2012Tajdoost et al 2007;Tanou et al 2012;Umezawa et al 2000). Salt stress inhibits photosynthetic activity and reduces plant growth by inducing osmotic stress and ionic toxicity (Chaves et al 2009;Tari et al 2013). Salt priming can help plants acclimate to lethal salinity by enhancing osmotic adjustment and suppressing ionic toxicity, indicated by the lowered Na ?…”

Section: Introductionmentioning

confidence: 99%

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Cao³

et al. 2015

Acta Physiol Plant

View full text Add to dashboard Cite

This study attempted to explore how salt priming affected salt tolerance in sweet sorghum with emphasis on root Na ? uptake. After 10 days of pretreatment with 150 mM NaCl, plants were stressed with 300 mM NaCl. After salt stress for 7 days, dry matter of root and shoot decreased by 58.7 and 69.7 % in non-pretreated plants and by 37.9 and 41.3 % in pretreated plants. Consistently, pretreated plants maintained higher photosynthetic rate during salt stress, suggesting the enhanced tolerance by salt priming. Salt priming enhanced osmotic resistance, as proline and relative water contents in the leaf were higher in pretreated plants under salt stress. Salt priming alleviated salt-induced oxidative damage not by improving antioxidant protection due to lower increase in leaf malondialdehyde content and no extra induction on ascorbate peroxidase, catalase, superoxide dismutase, ascorbic acid and reduced glutathione in pretreated plants. After 7 days of salt stress, root Na ? efflux increased by 8.5-and 3.9-folds in pretreated and non-pretreated plants, suggesting that salt priming reduced root Na ? uptake, and then root and leaf Na ? accumulation were mitigated in pretreated plants. However, root Na ? extrusion became indifferent between pretreated and non-pretreated plants under salt stress after inhibiting plasma membrane (PM) Na ?

show abstract

“…Globally, sorghum is positioned as the fifth most economically important cereal and plays a critical role in providing food, fodder, and fuel (5,6). Sorghum is considered to be relatively more hardy under extreme heat and drought conditions compared with other major crops and thus has received much attention as a potential adaptation strategy for farmers.…”

mentioning

confidence: 99%

Disaggregating sorghum yield reductions under warming scenarios exposes narrow genetic diversity in US breeding programs

Tack

Lingenfelser

Jagadish

2017

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Historical adaptation of sorghum production to arid and semiarid conditions has provided promise regarding its sustained productivity under future warming scenarios. Using Kansas field-trial sorghum data collected from 1985 to 2014 and spanning 408 hybrid cultivars, we show that sorghum productivity under increasing warming scenarios breaks down. Through extensive regression modeling, we identify a temperature threshold of 33°C, beyond which yields start to decline. We show that this decline is robust across both field-trial and on-farm data. Moderate and higher warming scenarios of 2°C and 4°C resulted in roughly 17% and 44% yield reductions, respectively. The average reduction across warming scenarios from 1 to 5°C is 10% per degree Celsius. Breeding efforts over the last few decades have developed high-yielding cultivars with considerable variability in heat resilience, but even the most tolerant cultivars did not offer much resilience to warming temperatures. This outcome points to two concerns regarding adaption to global warming, the first being that adaptation will not be as simple as producers' switching among currently available cultivars and the second being that there is currently narrow genetic diversity for heat resilience in US breeding programs. Using observed flowering dates and disaggregating heat-stress impacts, both pre-and postflowering stages were identified to be equally important for overall yields. These findings suggest the adaptation potential for sorghum under climate change would be greatly facilitated by introducing wider genetic diversity for heat resilience into ongoing breeding programs, and that there should be additional efforts to improve resilience during the preflowering phase.agriculture | climate change | crop | sorghum | warming

show abstract

Response of Sorghum to Abiotic Stresses: A Review

Cited by 141 publications

References 83 publications

Environmental impacts and constraints associated with the production of major food crops in Sub-Saharan Africa and South Asia

Environmental impacts and constraints associated with the production of major food crops in Sub-Saharan Africa and South Asia

Salt priming improved salt tolerance in sweet sorghum by enhancing osmotic resistance and reducing root Na+ uptake

Disaggregating sorghum yield reductions under warming scenarios exposes narrow genetic diversity in US breeding programs

Contact Info

Product

Resources

About