Changes in the free amino acid composition of Capsicum annuum (pepper) leaves in response to Myzus persicae (green peach aphid) infestation. A comparison with water stress.
Changes in the free amino acid composition of Capsicum annuum (pepper) leaves in response to Myzus persicae (green peach aphid) infestation. A comparison with water stress.
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DOI：
10.1371/journal.pone.0198093
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Casas JL
中科院分区：
文献类型：
--
作者：
Florencio-Ortiz V;Sellés-Marchart S;Zubcoff-Vallejo J;Jander G;Casas JL
氨基酸在蚜虫与植物的相互作用中起着核心作用。它们是植物初级代谢的重要组成部分，是合成与防御相关的专门代谢物的前体，也是蚜虫主要的生长限制营养素。为定量测定青桃蚜（Myzus persicae Sulzer）取食辣椒（Capsicum annuum L.）叶片游离氨基酸含量对青桃蚜（Myzus persicae Sulzer）影响的变化，在3 ~ 7 d的时间内，采用低密度（20只/株）和高密度（200只/株）蚜虫侵染植物。对经受水分胁迫的辣椒植株进行了平行试验。混合数据的因子分析表明，时间和密度对蚜虫侵染叶片的游离氨基酸响应有显著的交互作用。在低蚜虫密度下，桃蚜对辣椒叶片的反应不强烈。相反，在高密度条件下，总游离氨基酸含量显著增加，特定氨基酸含量在侵染后不同时间达到峰值。将蚜虫侵染植物与缺水植物进行比较，所观察到的差异大多是数量上的。特别是脯氨酸和羟脯氨酸在水分胁迫下显著积累，而在蚜虫侵染下不显著积累。讨论了两种应力处理之间的一些其他差异和共同点。
Amino acids play a central role in aphid-plant interactions. They are essential components of plant primary metabolism, function as precursors for the synthesis of defense-related specialized metabolites, and are major growth-limiting nutrients for aphids. To quantify changes in the free amino acid content of pepper (Capsicum annuum L.) leaves in response to green peach aphid (Myzus persicae Sulzer) feeding, plants were infested with a low (20 aphids/plant) or a high (200 aphids/plant) aphid density in time-course experiments ranging from 3 hours to 7 days. A parallel experiment was conducted with pepper plants that had been subjected to water stress. Factor Analysis of Mixed Data revealed a significant interaction of time x density in the free amino acid response of aphid-infested leaves. At low aphid density, M. persicae did not trigger a strong response in pepper leaves. Conversely, at high density, a large increase in total free amino acid content was observed and specific amino acids peaked at different times post-infestation. Comparing aphid-infested with water-stressed plants, most of the observed differences were quantitative. In particular, proline and hydroxyproline accumulated dramatically in response to water stress, but not in response to aphid infestation. Some additional differences and commonalities between the two stress treatments are discussed.
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影响因子：
3.8
作者：
CORCUERA, LJ
通讯作者：
CORCUERA, LJ
DOI：
10.1016/j.jchromb.2011.01.010
发表时间：
2011-03-01
影响因子：
3
作者：
Harder, Ulrike;Koletzko, Berthold;Peissner, Wolfgang
通讯作者：
Peissner, Wolfgang
影响因子：
3.4
作者：
Arias, Monica;Meichanetzoglou, Aimilia;Llaurens, Violaine
通讯作者：
Llaurens, Violaine
影响因子：
4.3
作者：
del Amor, Francisco M.;Cuadra-Crespo, Paula;Madrid, Ramon
通讯作者：
Madrid, Ramon
影响因子：
4.1
作者：
Oufir, Mouhssin;Schulz, Nadine;Guignard, Cedric
通讯作者：
Guignard, Cedric