2008
DOI: 10.1111/j.1365-313x.2008.03570.x
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Autophagy regulated by day length determines the number of fertile florets in wheat

Abstract: SummaryThe wheat spikelet meristem differentiates into up to 12 floret primordia, but many of them fail to reach the fertile floret stage at anthesis. We combined microarray, biochemical and anatomical studies to investigate floret development in wheat plants grown in the field under short or long days (short days extended with lowfluence light) after all the spikelets had already differentiated. Long days accelerated spike and floret development and greening, and the expression of genes involved in photosynth… Show more

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Cited by 144 publications
(112 citation statements)
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References 101 publications
(191 reference statements)
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“…This response is different to that observed for long photoperiods in sensitive lines, where accelerated growth and sugar depletion are the suggested cause for autophagy (e.g. Ghiglione et al 2008). However, it fits the description of a quantitative response to temperature with an optimum.…”
Section: Discussioncontrasting
confidence: 76%
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“…This response is different to that observed for long photoperiods in sensitive lines, where accelerated growth and sugar depletion are the suggested cause for autophagy (e.g. Ghiglione et al 2008). However, it fits the description of a quantitative response to temperature with an optimum.…”
Section: Discussioncontrasting
confidence: 76%
“…This study highlighted the link between the success of wheat reproductive structures in response to temperature utilising genotypic variation in water soluble carbohydrate metabolism, going beyond the evidence obtained by shading/light addition (Stockman et al 1983) and daylength manipulation and sucrose feeding (Ghiglione et al 2008). The corollary of the differential spike biomass, lower relative floret development rate till booting, together with the coordination of sucrose production, transport and cleavage was a higher number of fertile florets per spike under higher temperature and longer photoperiod for the High WSC lines.…”
Section: Discussionmentioning
confidence: 81%
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“…In contrast to vernalization, variations in photoperiod have minor effects on the duration of the vegetative phase but strongly accelerate the early and late reproductive phases of inflorescence development in wheat and barley Slafer et al, 2001). The duration of the spike growth phase has been identified as a major determinant of seed number (Fischer, 1985;Slafer, 2003;Reynolds et al, 2009;Alqudah and Schnurbusch, 2014) because of competition between the spike and stem for limited assimilates (González et al, 2003(González et al, , 2011Ghiglione et al, 2008). Quantitative trait loci with strong effects on the durations of individual preanthesis phases have been mapped close to PHOTOPERIOD1, Ppd-B1/Ppd-D1 and Ppd-H1 in wheat and barley, respectively (González et al, 2005;Borrás-Gelonch et al, 2010Sanna et al, 2014).…”
Section: Introductionmentioning
confidence: 99%