Indigestibility of plant cell wall by the Australian plague locust, Chortoicetes terminifera
Indigestibility of plant cell wall by the Australian plague locust, Chortoicetes terminifera
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DOI：
10.1111/j.0013-8703.2004.00192.x
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发表时间：
2004-09-01
影响因子：
1.9
通讯作者：
Read, J
中科院分区：
文献类型：
--
作者：
Clissold, FJ;Sanson, GD;Read, J
植物细胞壁可能在防御食草动物方面发挥重要作用，因为它既可以是容易消化的细胞内容物的屏障，也可以是营养稀释剂。本研究旨在探讨小麦、小麦和小麦三种禾本科植物细胞壁的消化率，Dactyloctenium radulans（R. Br.）博夫，和Astrebla lappacea（Lindl.）Domin，由澳大利亚鼠疫蝗Chortoicacidumterminifera步行者（直翅目：蝗科，蝗亚科）通过货车Soest方法测定[货车索斯特PJ，Robertson JB &刘易斯BA（1991）与动物营养有关的膳食纤维、中性洗涤纤维和非淀粉多糖的方法。Journal of Dairy Science 74：3583-3597]。测定蝗虫对植物细胞壁的消化需要一个精确的方法学程序，以确定准确的摄入量以及食物和粪便中细胞壁的浓度。植物细胞壁测定受干燥植物材料的粒度分布的影响。所有这三种草不同的细胞壁每克干物质的百分比和半纤维素，纤维素和酸性洗涤剂硫酸木质素的细胞壁内的比例。蝗虫无法消化任何一种草的细胞壁。因此，植物细胞壁是阻碍蝗虫吸收养分的机械屏障。也就是说，可获得性，而不是养分浓度本身，可能是限制养分的因素。
The plant cell wall may play an important role in defence against herbivores since it can be both a barrier to, and nutrient diluter of, the easily digested cell contents. The aim of this study was to investigate the digestibility of the cell wall of three grasses, Triticum aestivum L., Dactyloctenium radulans (R. Br.) Beauv., and Astrebla lappacea (Lindl.) Domin, by the Australian plague locust, Chortoicetes terminifera Walker (Orthoptera: Acrididae, Acridinae) as determined by the Van Soest method [Van Soest PJ, Robertson JB & Lewis BA (1991) Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74: 3583-3597]. Determination of plant cell wall digestion by locusts required a precise methodological procedure to determine both the exact intake and the concentration of cell wall in the diet and the faeces. Plant cell wall determination is affected by the particle size distribution of the dried plant material. All three grasses differed in the percentage of cell wall per gram dry matter and the proportions of hemicellulose, cellulose, and acid-detergent sulphuric lignin within the cell wall. The locust was unable to digest the cell wall of any of the grasses. Thus, plant cell walls are a mechanical barrier hindering locusts assimilating nutrients. That is, access, rather than nutrient concentration per se, may be limiting nutrient factor.