Nickel hyperaccumulation as an elemental defense of Streptanthus polygaloides (Brassicaceae):: influence of herbivore feeding mode
Nickel hyperaccumulation as an elemental defense of Streptanthus polygaloides (Brassicaceae):: influence of herbivore feeding mode
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DOI：
10.1111/j.1469-8137.2005.01504.x
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发表时间：
2005-11-01
期刊：
影响因子：
9.4
通讯作者：
Eubanks, MD
中科院分区：
文献类型：
--
作者：
Jhee, EM;Boyd, RS;Eubanks, MD
目前还没有研究单一镍（Ni）超富集物种对各种摄食方式的食草动物的影响。以8种节肢动物为食动物，在高、低镍土壤中种植链菊，进行了一系列无选择和选择取食试验。所使用的食草动物是两种咀嚼叶子的食叶动物（蚱蜢Melanoplus femurrubrum和鳞翅目Evergestis rimosalis），一种双翅目根食动物（甘蓝蛆Delia radicum），一种木质部食动物（吐沫虫Philaenus spumarius），两种韧皮部食动物（蚜虫，Lipaphis erysimi和Trialeurodes vaporariorum）和两种细胞破坏动物（线虫Lygus lineolaris和白蛉叶螨）。高积累的镍显著降低了食叶动物和根食动物的存活率，并显著降低了白蝇细胞干扰物的种群增长。然而，维管组织食性昆虫不受高积累镍的影响，昆虫细胞干扰素也不受影响。结果表明，Ni对组织咀嚼型食草动物具有一定的防御能力，但对维管组织摄食型食草动物的防御能力较弱。镍对细胞干扰物的影响各不相同，这是由于昆虫对镍的敏感性变化或镍在聚甘柳细胞和组织中的位置不同。
No study of a single nickel (Ni) hyperaccumulator species has investigated the impact of hyperaccumulation on herbivores representing a variety of feeding modes.Streptanthus polygaloides plants were grown on high- or low-Ni soils and a series of no-choice and choice feeding experiments was conducted using eight arthropod herbivores. Herbivores used were two leaf-chewing folivores (the grasshopper Melanoplus femurrubrum and the lepidopteran Evergestis rimosalis), a dipteran rhizovore (the cabbage maggot Delia radicum), a xylem-feeder (the spittlebug Philaenus spumarius), two phloem-feeders (the aphid, Lipaphis erysimi and the spidermite Trialeurodes vaporariorum) and two cell-disruptors (the bug Lygus lineolaris and the whitefly Tetranychus urticae).Hyperaccumulated Ni significantly decreased survival of the leaf-chewers and rhizovore, and significantly reduced population growth of the whitefly cell-disruptor. However, vascular tissue-feeding insects were unaffected by hyperaccumulated Ni, as was the bug cell-disruptor.We conclude that Ni can defend against tissue-chewing herbivores but is ineffective against vascular tissue-feeding herbivores. The effects of Ni on cell-disruptors varies, as a result of either variation of insect Ni sensitivity or the location of Ni in S. polygaloides cells and tissues.