Genotypic variation in cell wall composition in a diverse set of 244 accessions of Miscanthus
Genotypic variation in cell wall composition in a diverse set of 244 accessions of Miscanthus
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DOI：
10.1016/j.biombioe.2011.10.008
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发表时间：
2011-11-01
影响因子：
6
通讯作者：
Donnison, Iain S.
中科院分区：
文献类型：
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作者：
Allison, Gordon G.;Morris, Catherine;Donnison, Iain S.
我们报道了在威尔士对244份不同的芒属植物进行的重复间隔植物试验，这些材料按经典分类学分为中华芒属、糖花芒属和巨芒属。不同分类群在细胞壁组成上存在较大差异。中性洗涤纤维(88.19%干重、85.59%干重和85.03%干重；SED为0.300；P<；0.001)；ADL(11.76%、10.15%和9.07%干重；SED为0.087；P<；0.001)和纤维素(47.09%、42.94%和42.50%干重；S.E.D.为0.255；P<；0.001)；半纤维素含量显著低于其他组(29.43%干重、32.5%干重和33.46%干重；SED为0.130；P<；0.001)。生长年限、分类群与生长年限的互作效应较小。大黄鱼的ADL与纤维素(R=0.72)和半纤维素(R=-0.76)具有较强的相关性，而糖花对虾(R=0.66和-0.59)和中华对虾(R=0.46和-0.40)的相关性较弱。此前，在欧洲芒属改良计划(EMI)期间，英国已经评估了11种基因类型。这些细菌的ADL和半纤维素浓度通常高于英国工厂在EMI研究期间报告的浓度，而纤维素浓度则低于英国工厂报告的浓度。这些结果表明，细胞壁组成和ADL浓度在不同生长年间高度稳定，但受场地位置的影响。此外，不同的芒属分类群在细胞壁组成上存在差异，这对培育成分与转化过程相匹配的新品种可能是有价值的。(C)2011爱思唯尔有限公司。保留所有权利。
We report on a replicated spaced-plant trial in Wales of 244 diverse Miscanthus accessions grouped by classical taxonomy into M. sinensis, M. sacchariflorus and M. x giganteus. Large differences in cell wall composition were detected between taxonomic groups. Significantly higher concentrations of NDF (88.19, 85.59 and 85.03 %DW; S.E.D. of 0.300; P < 0.001); ADL (11.76, 10.15 and 9.07 %DW; S.E.D. of 0.087; P < 0.001) and cellulose (47.09, 42.94 and 42.50 %DW; S.E.D. of 0.255; P < 0.001); and significantly lower concentrations of hemicellulose (29.43, 32.50 and 33.46 %DW; S.E.D. of 0.130; P < 0.001) were present in the samples from M. x giganteus compared to the other groups. Growth year and the interaction between taxonomic group and growth year had smaller significant effects. Strong correlations were found between ADL and cellulose (R = 0.72), and hemicellulose (R = -0.76) in the M. x giganteus samples but correlations were weaker for M. sacchariflorus (R = 0.66 and -0.59) and M. sinensis (R = 0.46 and -0.40). Eleven genotypes had been assessed previously in the U.K. during the European Miscanthus Improvement (EMI) programme. These generally had higher concentrations of ADL and hemicellulose, and lower concentrations of cellulose than were reported for the U.K. site during the EMI study. These results suggest that cell wall composition and ADL concentration in particular, is highly stable between growth years but is affected by site location. Furthermore, there are differences in cell wall composition between Miscanthus taxonomic groups that may prove valuable for breeding new varieties that are compositionally matched to conversion process. (C) 2011 Elsevier Ltd. All rights reserved.