Physicochemical control of durum wheat grain filling and glutenin polymer assembly under different temperature regimes

Ferreira, Mariana Simões Larraz; Martre, Pierre; Mangavel, Cécile; Girousse, Christine; Rosa, Natalia N.; Samson, Marie-Françoise; Morel, Marie‐Hélène

doi:10.1016/j.jcs.2011.11.001

Cited by 37 publications

(28 citation statements)

References 31 publications

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“…Other results suggested that the end of grain filling could rather be caused by steric hindrance in the endosperm due to the accumulation of starch granules. This hypothesis is supported by the many reports showing that the end of grain filling occurs at a critical grain water concentration ( Ellis and Pieta Filho, 1992 ; Calderini et al, 2000 ; Borras et al, 2004 ; Borrás and Gambín, 2010 ; Ferreira et al, 2012 ). For wheat this water concentration is close to 46%.…”

Section: Introductionsupporting

confidence: 52%

Ear Rachis Xylem Occlusion and Associated Loss in Hydraulic Conductance Coincide with the End of Grain Filling for Wheat

et al. 2016

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Seed dehydration is the normal terminal event in the development of orthodox seeds and is physiologically related to the cessation of grain dry mass accumulation and crop grain yield. For a better understanding of grain dehydration, we evaluated the hypothesis that hydraulic conductance of the ear decreases during the latter stages of development and that this decrease results from disruption or occlusion of xylem conduits. Whole ear, rachis, and stem nodes hydraulic conductance and percentage loss of xylem conductivity were measured from flowering to harvest-ripeness on bread wheat (Triticum aestivum L.) cv. Récital grown under controlled environments. Flag leaf transpiration, stomatal conductance, chlorophyll content and grain and ear water potentials were also measured during grain development. We show that grain dehydration was not related with whole plant physiology and leaf senescence, but closely correlated with the hydraulic properties of the xylem conduits irrigating the grains. Indeed, there was a substantial decrease in rachis hydraulic conductance at the onset of the grain dehydration phase. This hydraulic impairment was not caused by the presence of air embolism in xylem conduits of the stem internodes or rachis but by the occlusion of the xylem lumens by polysaccharides (pectins and callose). Our results demonstrate that xylem hydraulics plays a key role during grain maturation.

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Section: Introductionsupporting

confidence: 52%

Ear Rachis Xylem Occlusion and Associated Loss in Hydraulic Conductance Coincide with the End of Grain Filling for Wheat

et al. 2016

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“…Weaker dough from grains that experience one or several days of very high temperature have been related to a marked decrease in the proportion of large molecular size glutenin polymers (ciaffi et al, 1996;corbellini et al, 1998;Wardlaw et al, 2002;don et al, 2005). The aggregation of glutenin proteins, which occurs mainly during grain desiccation after physiological maturity (carceller and aussenac, 2001;Ferreira et al, 2012), is likely the major process responsible for heat-shock-related dough weakening. extended periods of high temperature are common in many cereal-growing areas of the world, and above-optimal temperature is one of the major factors affecting small grain cereal yield and composition (randall and Moss, 1990;Borghi et al, 1995;Graybosch et al, 1995).…”

Section: Fig 174mentioning

confidence: 99%

“…Some studies suggest that very high temperature around mid-grain filling has positive effects on wheat dough strength (Stone et al, 1997;panozzo and eagles, 2000), whereas very high temperature around physiological maturity has a negative effect on dough strength (randall and Moss, 1990;Blumenthal et al, 1991;Stone and nicolas, 1996). This difference in the response of dough properties according to the timing of heat-shock are related to different effects on the gliadin-to-glutenin ratio and the size of glutenin polymers at each developmental stage (Ferreira et al, 2012). Further experiments to identify the relative sensitivity of different development stages in terms of gliadin and glutenin accumulation and glutenin polymer formation are clearly required.…”

Section: Fig 174mentioning

confidence: 99%

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Aguirrezábal¹,

Martre²,

Irujo³

et al. 2015

Crop Physiology

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“…The effective grain-filling phase follows when storage compounds, mainly starch and proteins, rapidly accumulate (Shewry et al, 2012 ). The rate of accumulation of starch and proteins slows down at around 550°Cd (27 days) after anthesis, when endosperm nuclei and protein bodies become compressed by starch granules (Hoshikawa, 1962 ; Ferreira et al, 2012 ) and progressively disintegrate. Accumulation stops at 650–700°Cd (32–35 days) after anthesis when the concentration of water in grain is close to 45 g per 100 g of fresh mass (Schnyder and Baum, 1992 ).…”

Section: Introductionmentioning

confidence: 99%

Changes in the nuclear proteome of developing wheat (Triticum aestivum L.) grain

Bonnot

Bancel

Chambon³

et al. 2015

Front. Plant Sci.

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Wheat grain end-use value is determined by complex molecular interactions that occur during grain development, including those in the cell nucleus. However, our knowledge of how the nuclear proteome changes during grain development is limited. Here, we analyzed nuclear proteins of developing wheat grains collected during the cellularization, effective grain-filling, and maturation phases of development, respectively. Nuclear proteins were extracted and separated by two-dimensional gel electrophoresis. Image analysis revealed 371 and 299 reproducible spots in gels with first dimension separation along pH 4–7 and pH 6–11 isoelectric gradients, respectively. The relative abundance of 464 (67%) protein spots changed during grain development. Abundance profiles of these proteins clustered in six groups associated with the major phases and phase transitions of grain development. Using nano liquid chromatography-tandem mass spectrometry to analyse 387 variant and non-variant protein spots, 114 different proteins were identified that were classified into 16 functional classes. We noted that some proteins involved in the regulation of transcription, like HMG1/2-like protein and histone deacetylase HDAC2, were most abundant before the phase transition from cellularization to grain-filling, suggesting that major transcriptional changes occur during this key developmental phase. The maturation period was characterized by high relative abundance of proteins involved in ribosome biogenesis. Data are available via ProteomeXchange with identifier PXD002999.

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Physicochemical control of durum wheat grain filling and glutenin polymer assembly under different temperature regimes

Cited by 37 publications

References 31 publications

Ear Rachis Xylem Occlusion and Associated Loss in Hydraulic Conductance Coincide with the End of Grain Filling for Wheat

Ear Rachis Xylem Occlusion and Associated Loss in Hydraulic Conductance Coincide with the End of Grain Filling for Wheat

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Changes in the nuclear proteome of developing wheat (Triticum aestivum L.) grain

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