Contributions of TaSUTs to grain weight in wheat under drought

Ahmed, Sarah Al-Sheikh; Zhang, Jingjuan; Ma, Wujun; Dell, B.

doi:10.1007/s11103-018-0782-1

Cited by 22 publications

(13 citation statements)

References 39 publications

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“…The energy requirement in Kauz at anthesis may relate to the high floret number per spike and high fertility rate leading to the significantly higher seed number per spike. In agreement with our previous studies, Kauz constantly showed significantly high kernel number per spike compared with Westonia [4,40].…”

Section: Differences In Diurnal Patterns Of Wsc and Wsc Components Insupporting

confidence: 93%

“…In wheat, so far, the five SUT gene families have been studied, namely TaSUT1, TaSUT2, TaSUT3, TaSUT4, and TaSUT5. Compared with other SUT gene groups, TaSUT1 is more highly expressed in all parts of the wheat plant [40]. High gene expression levels (1000 to 2000 units) for the three TaSUT1 homeologous genes, namely, TaSUT1_4A, TaSUT1_4B, and TaSUT1_4D, were also detected in a RNAseq data set of a drought experiment [40].…”

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 88%

“…It is suggested that enhanced yield relies on the combination of high sucrose transportation, enough carbon source and sink strength [56,58]. Relative to Westonia, the significantly higher gene expression of TaSUT1 in Kauz was also detected in irrigated plants [40]. The higher levels of sucrose and TaSUT1 expression may contribute to high grain yield in Kauz in well-watered conditions.…”

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 96%

“…Sucrose transporters (SUT) play a role in the active transport of sucrose across the membrane combined with proton transport [39]. In comparison to TaSUT2, TaSUT3, TaSUT4, and TaSUT5 during grain filling, TaSUT1 was identified as the major gene group with the highest expression level in the sucrose transporter family in wheat [40]. Since noticeable differences in sucrose levels between varieties were present at 21 DAA in both the flag leaves and stems, diurnal TaSUT1 gene expression was examined at this time of grain development.…”

Section: Tasut1 Gene Expression In the Flag Leaves And Stems At 21 Daamentioning

confidence: 99%

“…Compared with other SUT gene groups, TaSUT1 is more highly expressed in all parts of the wheat plant [40]. High gene expression levels (1000 to 2000 units) for the three TaSUT1 homeologous genes, namely, TaSUT1_4A, TaSUT1_4B, and TaSUT1_4D, were also detected in a RNAseq data set of a drought experiment [40]. Therefore, TaSUT1 expression was focused using the same tissue samples for the sugar diurnal analysis at 21 DAA.…”

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 99%

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Diurnal Changes in Water Soluble Carbohydrate Components in Leaves and Sucrose Associated TaSUT1 Gene Expression during Grain Development in Wheat

Ahmed

Zhang

Farhan

et al. 2020

IJMS

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In plant tissues, sugar levels are determined by the balance between sugar import, export, and sugar synthesis. So far, water soluble carbohydrate (WSC) dynamics have not been investigated in a diurnal context in wheat stems as compared to the dynamics in flag leaves during the terminal phases of grain filling. Here, we filled this research gap and tested the hypothesis that WSC dynamics interlink with gene expression of TaSUT1. The main stems and flag leaves of two genotypes, Westonia and Kauz, were sampled at four hourly intervals over a 24 h period at six developmental stages from heading to 28 DAA (days after anthesis). The total levels of WSC and WSC components were measured, and TaSUT1 gene expression was quantified at 21 DAA. On average, the total WSC and fructan levels in the stems were double those in the flag leaves. In both cultivars, diurnal patterns in the total WSC and sucrose were detected in leaves across all developmental stages, but not for the fructans 6-kestose and bifurcose. However, in stems, diurnal patterns of the total WSC and fructan were only found at anthesis in Kauz. The different levels of WSC and WSC components between Westonia and Kauz are likely associated with leaf chlorophyll levels and fructan degradation, especially 6-kestose degradation. High correlation between levels of TaSUT1 expression and sucrose in leaves indicated that TaSUT1 expression is likely to be influenced by the level of sucrose in leaves, and the combination of high levels of TaSUT1 expression and sucrose in Kauz may contribute to its high grain yield under well-watered conditions.

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Section: Differences In Diurnal Patterns Of Wsc and Wsc Components Insupporting

confidence: 93%

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 88%

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 96%

Section: Tasut1 Gene Expression In the Flag Leaves And Stems At 21 Daamentioning

confidence: 99%

Section: Tasut1 Gene Expression Associated With the Diurnal Patterns mentioning

confidence: 99%

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Diurnal Changes in Water Soluble Carbohydrate Components in Leaves and Sucrose Associated TaSUT1 Gene Expression during Grain Development in Wheat

Ahmed

Zhang

Farhan

et al. 2020

IJMS

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Identification of plant hormones and candidate hub genes regulating flag leaf senescence in wheat response to water deficit stress at the grain‐filling stage

et al. 2019

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In order to clarify the transcriptional regulatory network and physiological mechanisms governing leaf senescence response to drought stress in wheat, experiments were performed using two wheat varieties with contrasting drought tolerance: Fu287 (F287, a drought‐sensitive genotype) and Shannong20 (SN20, a drought‐resistant genotype). The latter has higher SPAD values, salicylic acid (SA), jasmonic acid (JA), zeatin (Z), zeatin riboside (ZR), and gibberellin (GA3) content as well as higher expression levels of Cu/Zn‐SOD, Mn‐SOD, Fe‐SOD, POD, CAT, and APX under various water deficit conditions. Conjoint analysis of physiological and biochemical indicators and transcriptome data by weighted gene co‐expression network analysis (WGCNA) in the present study provides a useful genomic and molecular resource for studying drought adaptation in wheat. The flag leaf senescence process was changed by altering the concentration of phytohormones. SA, JA, abscisic acid (ABA), Z, ZR, and GA3 coordinate with each other to control leaf senescence and plant adaptation under drought stress. Further, the leaf senescence process was divided into two phases: the persistence phase and the rapid loss phase. Shorter Chltotal (duration of the flag leaf being photosynthetically active), shorter Chlper (persistence phase), reduced M (inflection point cumulative temperature when senescence rate is the maximum), decreased rmax (the maximum senescence rate), larger r0 (the initial senescence rate), and increased raver (the average senescence rate) were slightly associated with low grain mass. We speculated that extending the period of the persistence phase by cultivation or chemical control measures could further increase the drought survivability and productivity of wheat.

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Genome-wide association analysis of stem water-soluble carbohydrate content in bread wheat

Yang

et al. 2020

Theor Appl Genet

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Contributions of TaSUTs to grain weight in wheat under drought

Cited by 22 publications

References 39 publications

Diurnal Changes in Water Soluble Carbohydrate Components in Leaves and Sucrose Associated TaSUT1 Gene Expression during Grain Development in Wheat

Diurnal Changes in Water Soluble Carbohydrate Components in Leaves and Sucrose Associated TaSUT1 Gene Expression during Grain Development in Wheat

Identification of plant hormones and candidate hub genes regulating flag leaf senescence in wheat response to water deficit stress at the grain‐filling stage

Genome-wide association analysis of stem water-soluble carbohydrate content in bread wheat

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