Tissue Lignification, Cell Wall p-Coumaroylation and Degradability of Maize Stems Depend on Water Status,Journal of Agricultural and Food Chemistry

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Tissue Lignification, Cell Wall p-Coumaroylation and Degradability of Maize Stems Depend on Water Status
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-04-24 00:00:00 , DOI: 10.1021/acs.jafc.7b05755
F. El Hage _{1,

2} , D. Legland ₃ , N. Borrega ₁ , M.-P. Jacquemot ₁ , Y. Griveau ₁ , S. Coursol ₁ , V. Méchin ₁ , M. Reymond ₁

Affiliation

Water supply and valorization are two urgent issues in the utilization of maize biomass in the context of climate change and replacement of fossil resources. Maximizing maize biomass valorization is of interest to make biofuel conversion competitive, and to increase forage energetic value for animal fodder. One way to estimate biomass valorization is to quantify cell wall degradability. In this study, we evaluated the impact of water supply on cell wall degradability, cell wall contents and structure, and distribution of lignified cell types in maize internodes using dedicated high-throughput tools to effectively phenotype maize internodes from 11 inbred lines under two contrasting irrigation scenarios in field trials over three years. Overall, our results clearly showed that water deficit induced significant changes in lignin content and distribution along with a reduction in lignin p-coumaroylation, thereby impacting cell wall degradability. Additionally, we also observed that responses to a water deficit varied between the lines examined, underscoring biochemical and histological target traits for plant breeding.

中文翻译：

玉米茎的组织木质化，细胞壁p-香豆酰化和可降解性取决于水分状况

在气候变化和化石资源替代的背景下，供水和增值是利用玉米生物量的两个紧迫问题。最大化玉米生物质的增值作用对于提高生物燃料的转化竞争力和提高牲畜饲料的饲用能量价值具有重要意义。估算生物质平衡的一种方法是量化细胞壁的降解性。在这项研究中，我们评估了供水对玉米节间细胞壁可降解性，细胞壁含量和结构以及木质化细胞类型分布的影响，使用专用的高通量工具在两次对比灌溉下有效地对11个自交系的玉米节间表型进行了表型分析三年中进行现场试验的场景。全面的，对-香豆素化，从而影响细胞壁降解性。此外，我们还观察到对水分缺乏的反应在所考察的品系之间有所不同，强调了植物育种的生化和组织学目标性状。

更新日期：2018-04-24

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