Heat stress screening of peanut (Arachis hypogaea L.) seedlings for acquired thermotolerance

Selvaraj, Michael Gomez; Burow, Gloria; Burke, John J.; Belamkar, Vikas; Puppala, Naveen; Burow, Mark D.

doi:10.1007/s10725-011-9577-y

Cited by 41 publications

(21 citation statements)

References 40 publications

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“…Chlorophyll accumulation assays have been used to characterize genetic variability in acquired thermotolerance for many crop species (Selvaraj et al, 2011). In wheat for instance, heat stress-induced damage of the thylakoid membrane is closely associated to chlorophyll loss, and detection of chlorophyll content has been proposed as high throughput screening method for tolerance to heat (Shah and Paulsen, 2003).…”

Section: Strategies To Crop Improvement For Heat Stress Tolerancementioning

confidence: 99%

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Bita¹,

Geräts²

2013

Front. Plant Sci.

1,395

924

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Global warming is predicted to have a general negative effect on plant growth due to the damaging effect of high temperatures on plant development. The increasing threat of climatological extremes including very high temperatures might lead to catastrophic loss of crop productivity and result in wide spread famine. In this review, we assess the impact of global climate change on the agricultural crop production. There is a differential effect of climate change both in terms of geographic location and the crops that will likely show the most extreme reductions in yield as a result of expected extreme fluctuations in temperature and global warming in general. High temperature stress has a wide range of effects on plants in terms of physiology, biochemistry and gene regulation pathways. However, strategies exist to crop improvement for heat stress tolerance. In this review, we present recent advances of research on all these levels of investigation and focus on potential leads that may help to understand more fully the mechanisms that make plants tolerant or susceptible to heat stress. Finally, we review possible procedures and methods which could lead to the generation of new varieties with sustainable yield production, in a world likely to be challenged both by increasing population, higher average temperatures and larger temperature fluctuations.

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Section: Strategies To Crop Improvement For Heat Stress Tolerancementioning

confidence: 99%

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Bita¹,

Geräts²

2013

Front. Plant Sci.

1,395

924

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“…The cultivation of peanut is largely confined to warmer regions of the globe (Selvaraj et al., ). However, in such regions, water stress in combination with heat stress (HS) poses a serious threat to crop production.…”

Section: Peanut Responses To Abiotic Stressesmentioning

confidence: 99%

Peanut (Arachis hypogaea L.): A Prospective Legume Crop to Offer Multiple Health Benefits Under Changing Climate

Akram

Shafiq

Ashraf

2018

Comp Rev Food Sci Food Safe

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Peanut is a multipurpose oil-seed legume, which offer benefits in many ways. Apart from the peanut plant's beneficial effects on soil quality, peanut seeds are nutritious and medicinally and economically important. In this review, insights into peanut origin and its domestication are provided. Peanut is rich in bioactive components, including phenolics, flavonoids, polyphenols, and resveratrol. In addition, the involvement of peanut in biological nitrogen fixation is highly significant. Recent reports regarding peanut responses and N 2 fixation ability in response to abiotic stresses, including drought, salinity, heat stress, and iron deficiency on calcareous soils, have been incorporated. As a biotechnological note, recent advances in the development of transgenic peanut plants are also highlighted. In this context, regulation of transcriptional factors and gene transfer for the development of stress-tolerant peanut genotypes are of prime importance. Above all, this review signifies the importance of peanut cultivation and human consumption in view of the scenario of changing world climate in order to maintain food security.

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“…Evaluation has demonstrated significant phenotypic diversity for numerous traits, including resistance to leaf spots, tomato spotted wilt virus, other biotic stresses, for tolerance to drought or heat stress, and for early maturity (Isleib et al 1995; Anderson et al 1996; Upadhyaya 2003, 2005, Upadhyaya et al 2006a,b; Selvaraj et al 2011; Wang et al 2011a; Jiang et al 2014; Pandey et al 2014; Singh et al 2014). To date, these have not been accompanied by molecular characterization at SNP levels.…”

mentioning

confidence: 99%

Transcriptome Sequencing of Diverse Peanut (Arachis) Wild Species and the Cultivated Species Reveals a Wealth of Untapped Genetic Variability

Chopra

Burow

Simpson³

et al. 2016

G3 Genes|Genomes|Genetics

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To test the hypothesis that the cultivated peanut species possesses almost no molecular variability, we sequenced a diverse panel of 22 Arachis accessions representing Arachis hypogaea botanical classes, A-, B-, and K- genome diploids, a synthetic amphidiploid, and a tetraploid wild species. RNASeq was performed on pools of three tissues, and de novo assembly was performed. Realignment of individual accession reads to transcripts of the cultivar OLin identified 306,820 biallelic SNPs. Among 10 naturally occurring tetraploid accessions, 40,382 unique homozygous SNPs were identified in 14,719 contigs. In eight diploid accessions, 291,115 unique SNPs were identified in 26,320 contigs. The average SNP rate among the 10 cultivated tetraploids was 0.5, and among eight diploids was 9.2 per 1000 bp. Diversity analysis indicated grouping of diploids according to genome classification, and cultivated tetraploids by subspecies. Cluster analysis of variants indicated that sequences of B genome species were the most similar to the tetraploids, and the next closest diploid accession belonged to the A genome species. A subset of 66 SNPs selected from the dataset was validated; of 782 SNP calls, 636 (81.32%) were confirmed using an allele-specific discrimination assay. We conclude that substantial genetic variability exists among wild species. Additionally, significant but lesser variability at the molecular level occurs among accessions of the cultivated species. This survey is the first to report significant SNP level diversity among transcripts, and may explain some of the phenotypic differences observed in germplasm surveys. Understanding SNP variants in the Arachis accessions will benefit in developing markers for selection.

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Heat stress screening of peanut (Arachis hypogaea L.) seedlings for acquired thermotolerance

Cited by 41 publications

References 40 publications

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops

Peanut (Arachis hypogaea L.): A Prospective Legume Crop to Offer Multiple Health Benefits Under Changing Climate

Transcriptome Sequencing of Diverse Peanut (Arachis) Wild Species and the Cultivated Species Reveals a Wealth of Untapped Genetic Variability

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