The spike plays important roles in the drought tolerance as compared to the flag leaf through the phenylpropanoid pathway in wheat

Li, Xiaorui; Zhang, Xu; Liu, Guangping; Yan, Tao; Zhou, Chunju; Zhang, Lixin; Lv, Jinyin

doi:10.1016/j.plaphy.2020.05.002

Cited by 48 publications

(32 citation statements)

References 61 publications

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“…The accumulation of free proline in plant tissues under various kinds of environmental stress was reported in many experiments, and some of them imply on the relation between proline synthesis and the compounds along the phenylpropanoid pathway (Shetty, 2004). Recently, Li et al (2020) revealed that wheat spike is more resilient than the flag leaf under drought stress, due to higher activities of the antioxidant enzymes and more proline accumulated, as well as the expression of genes involved in the phenylpropanoid pathway.…”

Section: Plant Response To Abiotic Stress and Biostimulant Applicationmentioning

confidence: 99%

Linking abiotic stress, plant metabolites, biostimulants and functional food

Teklić

Parađiković

Špoljarević

et al. 2020

Annals of Applied Biology

102

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Plants must cope with different environmental stresses during their whole lifetime. Abiotic stresses like drought, salt, mineral nutrition disturbances and temperature stress are commonly interconnected through some physiological events in stressed plants, such as the synthesis of protective plant compounds as a response to stress. Many of these, produced within plant primary or secondary metabolism, act as functional compounds not exclusively in plants but in other organisms as well. Concurrently, many of the active compounds in biostimulants which can support plant stress tolerance and productivity in adverse growth conditions are the metabolites or intermediates that may influence the plant's edible parts nutritional quality. Such effects of biostimulants application are not elucidated enough, therefore, we aimed to give an overview of recent advances in the research related to the interplay among abiotic stress, plant response, biostimulants effects and plant‐derived functional food, focusing on plant metabolites as the link which connects the environment with the food chain.

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Section: Plant Response To Abiotic Stress and Biostimulant Applicationmentioning

confidence: 99%

Linking abiotic stress, plant metabolites, biostimulants and functional food

Teklić

Parađiković

Špoljarević

et al. 2020

Annals of Applied Biology

102

View full text Add to dashboard Cite

show abstract

“…Drought is a severe source of abiotic stress that threatens wheat (Triticum aestivum L.) growth and yield worldwide and is exacerbated by climate change (Wang et al, 2016;Zhang et al, 2017;Alam et al, 2020). Northern China, a major global wheatproducing region, is frequently afflicted with drought during wheat growth, particularly when precipitation is relatively low and evapotranspiration is high in the spring (Deng et al, 2018;Jiang et al, 2020;Li et al, 2020). This leads to significant adverse effects on anthesis and grain filling (Li et al, 2000;Liu et al, 2014;Asif et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Ding

Long

et al. 2021

Front. Plant Sci.

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Foliar nitrogen (N) fertilizer application at later stages of wheat (Triticum aestivum L.) growth is an effective method of attenuating drought stress and improving grain filling. The influences or modes of action of foliar application of various nitrogen forms on wheat growth and grain filling need further research. The objective of this study was to examine the regulatory effects of various forms of foliar nitrogen [NO3–, NH4+, and CO(NH2)2] on wheat grain filling under drought stress and to elucidate their underlying mechanisms. The relative effects of each nitrogen source differed in promoting grain filling. Foliar NH4+-N application notably prolonged the grain filling period. In contrast, foliar application of CO(NH2)2 and NO3–-N accelerated the grain filling rate and regulated levels of abscisic acid (ABA), z-riboside (ZR), and ethylene (ETH) in wheat grains. Analysis of gene expression revealed that CO(NH2)2 and NO3–-N upregulated the genes involved in the sucrose–starch conversion pathway, promoting the remobilization of carbohydrates and starch synthesis in the grains. Besides, activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were increased, whereas the content of malondialdehyde (MDA) declined under foliar nitrogen application (especially NH4+-N). Under drought stress, enhancement of carbohydrate remobilization and sink strength became key factors in grain filling, and the relative differences in the effects of three N forms became more evident. In conclusion, NH4+-N application improved the antioxidant enzyme system and delayed photoassimilate transportation. On the other hand, foliar applications of NO3–-N and CO(NH2)2 enhanced sink capacity and alleviated drought stress injury in wheat.

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“…Lignin is essential in maintaining the integrity of plant vascular tissues to ensure efficient water transport to tissues that need it most during stress (Malavasi et al 2016). Likewise, the essential roles of plant phenolics (e.g., phenylpropanoids, flavonoids and phenols) in drought tolerance, like scavenging reactive oxygen species among other functions, have been reported in several studies (Sharma et al 2019;Kumar et al 2020;Li et al 2020). Taken together, our results show that the supposed higher production of secondary metabolites in Lady Rosetta and Biogold than Hansa (Fig.…”

Section: Discussionmentioning

confidence: 98%

Transcriptomic Responses of Potato to Drought Stress

et al. 2021

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Transcriptomic changes in plants during drought stress give insights into the mechanisms with which plants stabilise their metabolic processes in order to cope with the drought condition. In potato, understanding such drought-induced transcriptomic changes is critical because prolonged field drought interferes with tuber formation and bulking period of potato development, which eventually affects yield. We hypothesised that phenotypic drought responses of potato genotypes may be linked to differences in transcriptomic changes. Using an RNA sequencing approach, we investigated such transcriptomic changes in leaves of three cultivars (Biogold, Hansa and Lady Rosetta) under drought. We found more differentially expressed genes (DEGs) in the tolerant cultivars, Lady Rosetta and Biogold, than in the sensitive cultivar (Hansa). The differential gene expression trend reflected the phenotypic drought responses of the cultivars. For instance, we found in both Biogold and Lady Rosetta but not in Hansa, an upregulation of genes involved in carbohydrate metabolism (e.g., Alpha-glucosidase), flavonoid biosynthesis (e.g., Flavanone 3 beta-hydroxylase), lipid biosynthesis/transfer (e.g., nonspecific Lipid Transfer Proteins), heat shock proteins and secondary metabolites like phenolics and lignins. Furthermore, a prolonged drought stress resulted in reduced DEGs in Biogold and Hansa, but not in Lady Rosetta that also maintained its tuber yield under such prolonged stress suggesting a more robust drought tolerance. Our findings suggest that a synergistic expression of genes involved in several different aspects of drought response is required in order to obtain a robust tolerance.

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The spike plays important roles in the drought tolerance as compared to the flag leaf through the phenylpropanoid pathway in wheat

Cited by 48 publications

References 61 publications

Linking abiotic stress, plant metabolites, biostimulants and functional food

Linking abiotic stress, plant metabolites, biostimulants and functional food

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Transcriptomic Responses of Potato to Drought Stress

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