Trehalose-6-phosphate and SNF1-related protein kinase 1 are involved in the first-fruit inhibition of cucumber

Zhang, Zhiping; Deng, Yongbo; Song, Xiaoming; Miao, Minmin

doi:10.1016/j.jplph.2014.09.009

Cited by 35 publications

(39 citation statements)

References 44 publications

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“…These striking correlations between Tre6P and Suc led to the proposal that Tre6P is a signal of the plant's C status and possibly a specific signal for the availability of Suc (Lunn et al, 2006). Strong, positive correlations between Suc and Tre6P levels have since been observed in various other Arabidopsis tissues and developmental stages (Wingler et al, 2012;Carillo et al, 2013;Martins et al, 2013;Nunes et al, 2013a;Ragel et al, 2013;Wahl et al, 2013;Sulpice et al, 2014;Yadav et al, 2014), and in other species, including potato (Solanum tuberosum; Debast et al, 2011), wheat (Triticum aestivum; Martínez-Barajas et al, 2011), maize (Zea mays; Henry et al, 2014), and cucumber (Cucumis sativa; Zhang et al, 2015). Sugaraddition experiments with C-starved seedlings showed that only Suc, or sugars that can be readily metabolized to Suc (e.g.…”

Section: The Suc-tre6p Nexusmentioning

confidence: 99%

A Tale of Two Sugars: Trehalose 6-Phosphate and Sucrose

2016

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Section: The Suc-tre6p Nexusmentioning

confidence: 99%

A Tale of Two Sugars: Trehalose 6-Phosphate and Sucrose

2016

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“…The findings of Zhang et al . and subsequent support from many other studies, showing that T6P inhibits SnRK1 in sink and growing tissues to elicit changes in growth, metabolism and development through large changes in expression of genes known to be regulated by SnRK1, provides a framework for understanding the dramatic effects of T6P in plants and crops (Fig. ).…”

Section: The Trehalose Pathway: a Short History Of Learning What It Doesmentioning

confidence: 55%

Targeting carbon for crop yield and drought resilience

Griffiths

Paul

2017

J Sci Food Agric

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Current methods of crop improvement are not keeping pace with projected increases in population growth. Breeding, focused around key traits of stem height and disease resistance, delivered the step‐change yield improvements of the green revolution of the 1960s. However, subsequently, yield increases through conventional breeding have been below the projected requirement of 2.4% per year required by 2050. Genetic modification (GM) mainly for herbicide tolerance and insect resistance has been transformational, akin to a second green revolution, although GM has yet to make major inroads into intrinsic yield processes themselves. Drought imposes the major restriction on crop yields globally but, as yet, has not benefited substantially from genetic improvement and still presents a major challenge to agriculture. Much still has to be learnt about the complex process of how drought limits yield and what should be targeted. Mechanisms of drought adaptation from the natural environment cannot be taken into crops without significant modification for the agricultural environment because mechanisms of drought tolerance are often in contrast with mechanisms of high productivity required in agriculture. However, through convergence of fundamental and translational science, it would appear that a mechanism of sucrose allocation in crops can be modified for both productivity and resilience to drought and other stresses. Recent publications show how this mechanism can be targeted by GM, natural variation and a new chemical approach. Here, with an emphasis on drought, we highlight how understanding fundamental science about how crops grow, develop and what limits their growth and yield can be combined with targeted genetic selection and pioneering chemical intervention technology for transformational yield improvements. © 2017 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…Recently, Zhang et al . () implicated a role for T6P in cucumber fruit set, since it increased upon pollination in the first fruit and not in the second. In our study, a TPP transcript was sharply up‐regulated in inhibited ovaries (Table S3; Figure ).…”

Section: Discussionmentioning

confidence: 99%

“…The first fruit could act as a stronger sink compared to subsequent ones; in a study by Zhang et al . () activity of alkaline alpha‐galactosidase that breaks down imported oligosaccharides, was significantly higher in the peduncle of the first fruit than in the second fruit, indicating that the first fruit was indeed a stronger sink. In crops such as sweet pepper, cucumber and tomato, fruit compete strongly with each other for available assimilates, and the strength of the sink depends on the number of fruit that set and their developmental stage (Hall and Brady, ; Ali and Kelly, ; Marcelis, ).…”

Section: Discussionmentioning

confidence: 99%

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Cucumber ovaries inhibited by dominant fruit express a dynamic developmental program, distinct from either senescence‐determined or fruit‐setting ovaries

et al. 2018

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Cucurbits represent an attractive model to explore the dynamics of fruit set, whose regulation is not fully understood, despite its importance for yield determination. A fertilized ovary must integrate signals from distant plant parts and 'decide' whether to set fruit, or remain inhibited and later senesce. Here, we set out to characterize first-fruit inhibition (FFI), that is, the inhibitory effect of the first fruit on subsequent development of younger ovaries during pollination-induced and parthenocarpic fruit set. After the first fertilized ovaries set fruit, younger fertilized ovaries remained in a temporary state of inhibition. Such ovaries preserved their size and green color, and if the older fruit were removed within a 1-week reversibility window, they set fruit. The FFI effect was documented in both fertilized and parthenocarpic ovaries. We compared the gene expression profiles of pollinated ovaries (committed to set fruit) with respect to those affected by FFI, and to non-pollinated ovaries (undergoing senescence). The three fates of the ovaries were characterized by wide changes in gene expression, with several specific transcripts being up- or down-regulated in response to pollination, and to the presence of inhibitory fruit. Metabolic profiling was undertaken and integrated with the transcriptomic data in order to characterize early physiological changes that occur in post-anthesis ovaries in parthenocarpic and non-parthenocarpic genotypes. The combined results are discussed with respect to current models of fruit set and specifically with regard to FFI. Moreover, these metabolome and transcriptome data provide a valuable resource for studying ovary development and fruit set.

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Trehalose-6-phosphate and SNF1-related protein kinase 1 are involved in the first-fruit inhibition of cucumber

Cited by 35 publications

References 44 publications

A Tale of Two Sugars: Trehalose 6-Phosphate and Sucrose

A Tale of Two Sugars: Trehalose 6-Phosphate and Sucrose

Targeting carbon for crop yield and drought resilience

Cucumber ovaries inhibited by dominant fruit express a dynamic developmental program, distinct from either senescence‐determined or fruit‐setting ovaries

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