How do nitrogen and phosphorus deficiencies affect strigolactone production and exudation?
How do nitrogen and phosphorus deficiencies affect strigolactone production and exudation?
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DOI：
10.1007/s00425-011-1568-8
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发表时间：
2012-06
期刊：
影响因子：
4.3
通讯作者：
Yoneyama K
中科院分区：
文献类型：
--
作者：
Yoneyama K;Xie X;Kim HI;Kisugi T;Nomura T;Sekimoto H;Yokota T;Yoneyama K
植物分泌独脚金内酯（SL）吸引共生丛枝菌根真菌在根际。以往的研究表明，缺磷（P），而不是缺氮（N），显着促进红三叶草SL分泌，而在高粱不仅缺磷，而且缺氮增强SL分泌。在缺磷和缺氮条件下，不同植物SL分泌存在差异，这可能与豆科植物和非豆科植物的差异有关。为了详细研究这种可能性，研究了豆科（苜蓿和紫云英），菊科（金盏花和莴苣），茄科（番茄）和禾本科（小麦）植物中N和P缺乏对SL分泌的影响。在苜蓿中，正如预期的那样，出乎意料地在番茄中，只有磷缺乏促进SL分泌。与此相反，在紫云英，豆科植物，和其他非豆科植物检查，氮缺乏以及磷缺乏增强SL分泌。显着减少地上部P水平生长在氮缺乏下的植物中，除了番茄，其中地上部P水平增加N饥饿，这表明，P状态的地上部调节SL渗出。似乎有一个相关性之间的拍摄P水平和SL渗出跨物种/家庭调查。
Plants exude strigolactones (SLs) to attract symbiotic arbuscular mycorrhizal fungi in the rhizosphere. Previous studies have demonstrated that phosphorus (P) deficiency, but not nitrogen (N) deficiency, significantly promotes SL exudation in red clover, while in sorghum not only P deficiency but also N deficiency enhances SL exudation. There are differences between plant species in SL exudation under P- and N-deficient conditions, which may possibly be related to differences between legumes and non-legumes. To investigate this possibility in detail, the effects of N and P deficiencies on SL exudation were examined in Fabaceae (alfalfa and Chinese milk vetch), Asteraceae (marigold and lettuce), Solanaceae (tomato), and Poaceae (wheat) plants. In alfalfa as expected, and unexpectedly in tomato, only P deficiency promoted SL exudation. In contrast, in Chinese milk vetch, a leguminous plant, and in the other non-leguminous plants examined, N deficiency as well as P deficiency enhanced SL exudation. Distinct reductions in shoot P levels were observed in plants grown under N deficiency, except for tomato, in which shoot P level was increased by N starvation, suggesting that the P status of the shoot regulates SL exudation. There seems to be a correlation between shoot P levels and SL exudation across the species/families investigated.
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影响因子：
2.4
作者：
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