Phosphorus application increases root growth, improves daily water use during the reproductive stage, and increases grain yield in soybean subjected to water shortage

He, Jin; Jin, Yi; Turner, Neil C.; Zhu, Chen; Liu, Hong Yan; Wang, Xiao Li; Siddique, Kadambot H. M.; Li, Feng Min

doi:10.1016/j.envexpbot.2019.103816

Cited by 41 publications

(52 citation statements)

References 40 publications

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“…It is shown that shallow root system with more basal roots is efficient in P acquisition in soil with less bioavailable P whereas deeper root system contributes to terminal moisture stress condition [64]. Our findings showed that combined stress significantly reduced the shoot and root dry weight, similar to that reported in soybean [65,66].…”

Section: Interaction Of Low P and Drought On Growth And Root Traits Isupporting

confidence: 85%

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in a Diverse Set of Mungbean Germplasm

et al. 2021

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To understand the physiological basis of tolerance to combined stresses to low phosphorus (P) and drought in mungbean (Vignaradiata (L.) R. Wilczek), a diverse set of 100 accessions were evaluated in hydroponics at sufficient (250 μM) and low (3 μM) P and exposed to drought (dehydration) stress. The principal component analysis and ranking of accessions based on relative values revealed that IC280489, EC397142, IC76415, IC333090, IC507340, and IC121316 performed superior while IC119005, IC73401, IC488526, and IC325853 performed poorly in all treatments. Selected accessions were evaluated in soil under control (sufficient P, irrigated), low P (without P, irrigated), drought (sufficient P, withholding irrigation), and combined stress (low P, withholding irrigation). Under combined stress, a significant reduction in gas exchange traits (photosynthesis, stomatal conductance, transpiration, instantaneous water use efficiency) and P uptake in seed and shoot was observed under combined stress as compared to individual stresses. Among accessions, IC488526 was most sensitive while IC333090 and IC507340 exhibited tolerance to individual or combined stress. The water balance and low P adaptation traits like membrane stability index, relative water content, specific leaf weight, organic acid exudation, biomass, grain yield, and P uptake can be used as physiological markers to evaluate for agronomic performance. Accessions with considerable tolerance to low P and drought stress can be either used as ‘donors’ in Vigna breeding program or cultivated in areas with limited P and water availability or both.

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Section: Interaction Of Low P and Drought On Growth And Root Traits Isupporting

confidence: 85%

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in a Diverse Set of Mungbean Germplasm

et al. 2021

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“…Other researchers reported similar effect in soybean (He et al, 2017a) and in other crops [moth bean (Garg et al, 2004) and malting barley (Jones et al, 2003)]. Drought stress decreased the yield of both genotypes (by 60 and 50% in HD and ZH, respectively) (He et al, 2019). Many previous papers reported similar negative effect of drought stress on soybean seed yield (e.g.…”

Section: Discussionmentioning

confidence: 61%

“…Based on the results of this study, P fertilization increased pod number/plant in both cultivars, however, its effect was more measurable on Boglár cultivar. He et al (2019) reported that pod number/plant increased (by 13 and 140% in HD and ZH, respectively) in 60P under drought, whereas 120P did not further increase this trait. They also reported that under well-watered treatment, pod number/plant increased by 74 and 89% in 60P for HD and ZH, respectively, whereas 120P further increased this trait for HD, but not for ZH.…”

Section: Discussionmentioning

confidence: 94%

“…It was previously reported that drought stress negatively affects pollination process, leading to increased flower and pod abortion (Desclaux et al, 2000;Fang et al, 2010). Pod number/plant decreased by 49 and 43% in HD and ZH, respectively as a result of drought stress application (He et al, 2019).…”

Section: Discussionmentioning

confidence: 95%

“…Under drought stress conditions, the yield increased by 10 and 50% in 60P, and by 30 and 63% in 120P for HD and ZH, respectively. Under wellwatered conditions, however, 60P increased the yield by 143 and 41% for HD and ZH, respectively, whereas 120P did not have measurable effect on the final yield (He et al, 2019). The authors attributed the yield improvement by P application to the improved filled-pod number and grain number, whereas B´elanger et al (2002) concluded that P application enhanced the shoot biomass and, consequently, the seed yield.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Sole and combined effects of drought and phosphorus application on soybean

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The soybean (Glycine max L.) cytokinin oxidase/dehydrogenase multigene family; Identification of natural variations for altered cytokinin content and seed yield

et al. 2021

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Cytokinins (CKs) play a fundamental role in regulating dynamics of organ source/sink relationships during plant development, including flowering and seed formation stages. As a result, CKs are key drivers of seed yield. The cytokinin oxidase/dehydrogenase (CKX) is one of the critical enzymes responsible for regulating plant CK levels by causing their irreversible degradation. Variation of CKX activity is significantly correlated with seed yield in many crop species while in soybean (Glycine max L.), the possible associations between CKX gene family members (GFMs) and yield parameters have not yet been assessed. In this study, 17 GmCKX GFMs were identified, and natural variations among GmCKX genes were probed among soybean cultivars with varying yield characteristics. The key CKX genes responsible for regulating CK content during seed filling stages of reproductive development were highlighted using comparative phylogenetics, gene expression analysis and CK metabolite profiling. Five of the seventeen identified GmCKX GFMs, showed natural variations in the form of single nucleotide polymorphisms (SNPs). The gene GmCKX7‐1, with high expression during critical seed filling stages, was found to have a non‐synonymous mutation (H105Q), on one of the active site residues, Histidine 105, previously reported to be essential for co‐factor binding to maintain structural integrity of the enzyme. Soybean lines with this mutation had higher CK content and desired yield characteristics. The potential for marker‐assisted selection based on the identified natural variation within GmCKX7‐1, is discussed in the context of hormonal control that can result in higher soybean yield.

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Phosphorus application increases root growth, improves daily water use during the reproductive stage, and increases grain yield in soybean subjected to water shortage

Cited by 41 publications

References 40 publications

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in a Diverse Set of Mungbean Germplasm

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in a Diverse Set of Mungbean Germplasm

Sole and combined effects of drought and phosphorus application on soybean

The soybean (Glycine max L.) cytokinin oxidase/dehydrogenase multigene family; Identification of natural variations for altered cytokinin content and seed yield

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