Effects of environmental factors on cereal starch biosynthesis and composition

Thitisaksakul, Maysaya; Jiménez, Randi C.; Arias, María Cecilia; Beckles, Diane M.

doi:10.1016/j.jcs.2012.04.002

Cited by 219 publications

(190 citation statements)

References 260 publications

(245 reference statements)

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“…For the bean genotypes that were used in this study the level of starch in the grain showed the greatest correlation with productivity and PHI, as has previously been reported for cereal crops (Thitisaksakul et al 2012). The correlation between starch and drought tolerance in the form of productivity indicates that the accumulation of starch is associated with a high allocation of carbon to the grain in the form of soluble carbohydrates (Cuellar-Ortiz et al 2008).…”

Section: Euphyticasupporting

confidence: 71%

Biochemical indicators of drought tolerance in the common bean (Phaseolus vulgaris L.)

et al. 2016

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The common bean (Phaseolus vulgaris L.) is an important crop that is often planted in areas that suffer from low water availability, leading to significant reductions in productivity. The breeding of genotypes better able to tolerate such conditions requires the efficient incorporation of resources present in germplasm banks. To this end, we investigated the responses of thirty bean genotypes to intermittent drought stress, with the aim of identifying biochemical markers for drought tolerance. The genotypes analyzed presented significant variability in both productivity and levels of soluble sugars, starch and amino acids under both irrigated and drought conditions. Moreover, we observed changes in the levels of these components under drought stress, providing information on the responses of the bean plants to this condition. Correlation analysis indicated a lack of relationship between components of the stem and productivity. On the other hand, levels of several components of the grain, including starch, total soluble sugars and amino acids were strongly positively correlated with productivity under drought and irrigated conditions, making these components potentially useful biochemical markers for the selection of genotypes for breeding programs. Principal components analysis also indicated the presence of a relationship between biochemical composition and productivity, but reinforced the fact that multiple mechanisms are responsible for explaining the differences in productivity between tolerant and susceptible genotypes.

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Section: Euphyticasupporting

confidence: 71%

Biochemical indicators of drought tolerance in the common bean (Phaseolus vulgaris L.)

et al. 2016

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“…Our previous studies showed that high temperature, weak light, and drought after pollination significantly deteriorated the quality of waxy maize starch (Lu, Cai, Zhao, Shen, & Lu, 2015;Lu, Sun, Wang, Yan, & Lu, 2013;Lu et al, 2014). Several abiotic factors, including rainfall, sunlight, temperature, soil type, and growing conditions affecting the starch physicochemical properties of crops, may sometimes exhibit considerable influence than genotypic differences (Beckles & Thitisaksakul, 2014;Thitisaksakul, Jimenez, Abias, & Beckles, 2012;Wang & Frei, 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of waterlogging after pollination on the physicochemical properties of starch from waxy maize

Cai

Shi

et al. 2015

Food Chemistry

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“…9,20 The results are increased floret sterility, increased percentage of partially filled and unfilled grain, and lower yield. 3,8,17,22,23 Because of the multiplicity of factors that determine plant response to salinity the outcome may not always be predictable.Rice growth environment also strongly dictates grain postharvest attributes since the grain is consumed whole with minimal processing. 3,24,25 Starch is the main grain reserve in rice accumulating up to 50−90% of dry weight with protein contributing 5−12% to the total.…”

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confidence: 99%

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confidence: 99%

Effects of Timing and Severity of Salinity Stress on Rice (Oryza sativa L.) Yield, Grain Composition, and Starch Functionality

Thitisaksakul

Tananuwong

Shoemaker

et al. 2015

J. Agric. Food Chem.

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TitleEffects of timing and severity of salinity stress on rice (Oryza sativa L.) yield, grain composition, and starch functionality ABSTRACT: The aim of this work was to examine agronomic, compositional, and functional changes in rice (Oryza sativa L. cv. Nipponbare) grains from plants grown under low-to-moderate salinity stress in the greenhouse. Plants were grown in sodium chloride-containing soil (2 or 4 dS/m 2 electrical conductivity), which was imposed 4-weeks after transplant (called Seedling EC2 and EC4) or after the appearance of the anthers (called Anthesis EC2 and EC4). The former simulates field conditions while the latter permits observation of the isolated effect of salt on grain filling processes. Key findings of this study are the following: (i) Plants showed adaptive responses to prolonged salt treatment with no negative effects on grain weight or fertility. Seedling EC2 plants had more panicles and enhanced caryopsis dimensions, while surprisingly, Seedling EC4 plants did not differ from the control group in the agronomic parameters measured. (ii) Grain starch increased in Seedling EC4 (32.6%) and Anthesis EC2 (39%), respectively, suggesting a stimulatory effect of salt on starch accumulation. (iii) The salinity treatment of 2 dS/m 2 was better tolerated at anthesis than the 4 dS/m 2 treatment as the latter led to reduced grain weight (28.8%) and seed fertility (19.4%) and compensatory increases in protein (20.1%) and nitrogen (19.8%) contents. (iv) Although some salinity treatments led to changes in starch content, these did not alter starch fine structure, morphology, or composition. We observed no differences in reducing sugar and amylose content or starch granule size distribution among any of the treatments. The only alterations in starch were limited to small changes in thermal properties and glucan chain distribution, which were only seen in the Anthesis EC4 treatment. This similarity of compositional and functional features was supported by multivariate analysis of all variables measured, which suggested that differences due to treatments were minimal. Overall, this study documents the specific response of rice under defined conditions, and illustrates that the plasticity of plant response to mild stress is complex and highly context-dependent, even under greenhouse conditions in which other potential environmental stress impacts are minimized. KEYWORDS: rice (Oryza sativa L.), salinity stress, starch, starch functionalityRice (Oryza sativa L.) is one of the most important crops as it is a staple for over 3 billion people globally.1 Starch, and to a lesser extent protein, determine grain yields and quality, two important criteria for rice producers.2 Yield stability is the overriding agronomic consideration in places where rice is critical for food security, while grain sensory attributes are an important driver in other markets.2,3 Rice yield and sensory quality are both affected by environmental stress, and there is increasing concern on the specific effects of both.4−8 Soil salinity i...

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Effects of environmental factors on cereal starch biosynthesis and composition

Cited by 219 publications

References 260 publications

Biochemical indicators of drought tolerance in the common bean (Phaseolus vulgaris L.)

Biochemical indicators of drought tolerance in the common bean (Phaseolus vulgaris L.)

Effects of waterlogging after pollination on the physicochemical properties of starch from waxy maize

Effects of Timing and Severity of Salinity Stress on Rice (Oryza sativa L.) Yield, Grain Composition, and Starch Functionality

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