CHEMICAL DEFENSE PRODUCTION IN LOTUS-CORNICULATUS L .1. THE EFFECTS OF NITROGEN-SOURCE ON GROWTH, REPRODUCTION AND DEFENSE
CHEMICAL DEFENSE PRODUCTION IN LOTUS-CORNICULATUS L .1. THE EFFECTS OF NITROGEN-SOURCE ON GROWTH, REPRODUCTION AND DEFENSE
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DOI：
10.1007/bf00324629
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发表时间：
1990-01-01
期刊：
影响因子：
2.7
通讯作者：
BRIGGS, MA
中科院分区：
文献类型：
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作者：
BRIGGS, MA
对豆科植物百脉根进行了碳氮平衡理论检验，将碳分配给固氮。固氮作用可以通过在养分贫乏的生境中提供氮素以及消耗碳来支持共生固氮作用来影响豆科植物的碳氮比。L.在两种氮肥水平下培养小角藻克隆（基因型）：一种是通过施肥抑制结瘤的处理，另一种是不接受额外施肥的处理。这些植物完全依赖于共生固氮。支持共生体的植物有较低的生物量和较低的单宁浓度比施肥的植物，这似乎是由于大量的碳需求的N-固定。支持共生体的植物通常比受精植物具有相对较低的蛋白质浓度。氰化物浓度受植物基因型的影响，但不受氮源。虽然共生固氮植物较小，但它们的生殖产量是受精植物的三倍。
The carbon to nitrogen balance theory was examined for a legume, Lotus corniculatus L., which allocates carbon to nitrogen fixation. N-fixation can influence the ratio of carbon to nitrogen in legumes by providing nitrogen in nutrient-poor habitats, and by consuming carbon for support of symbiotic N-fixation. L. corniculatus clones (genotypes) were grown under two levels of nitrogen fertilization: a treatment which suppressed nodulation with fertilization and a treatment which received no additional fertilization. These plants relied soley on symbiotic N-fixation. Plants which supported symbionts had lower biomass and lower tannin concentrations than fertilized plants; this appears to be a result of the large carbon demand on N-fixation. Plants supporting symbionts often had relatively lower protein concentrations than fertilized plants. Cyanide concentration was influenced by plant genotype but not by nitrogen source. Although symbiotic N-fixing plants were smaller, they had three times the reproductive output of fertilized plants.