Chandrasekhar K, Shavit R, Distelfeld A, Christensen S A, Tzin V
a French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research , Ben-Gurion University of the Negev, Sede Boqer Campus , Israel.
b School of Plant Sciences and Food Security , Tel Aviv University , Israel.
Plant Signal Behav. 2018;13(6):e1486148. doi: 10.1080/15592324.2018.1486148. Epub 2018 Jun 26.
Infestation of Triticum (wheat) plants by their pest Rhopalosiphum maidis (corn leaf aphid) causes severe vegetative damage. Despite the agro-economic importance of wheat, the metabolic diversity of Triticum turgidum (tetraploid wheat) in response to aphid attack has not been sufficiently addressed. In this study, we compared the metabolic diversity of two tetraploid wheat genotypes, domesticated and wild emmer. The plants were grown in a control growth room and infested with aphids for 96 h. Our untargeted metabolic analysis performed on plants with and without aphids revealed massive differences between the two genotypes. The targeted metabolic analysis highlighted the differences in the biosynthesis of phytohormones. The aphid progeny was lower in the cultivated durum wheat than in the wild emmer wheat. Overall, these observations emphasize the potential of using the natural diversity of wheat species to better understand the metabolic responses to pest damage.
小麦植株受到其害虫玉米叶蚜的侵害会造成严重的营养损害。尽管小麦具有农业经济重要性，但四倍体小麦（硬粒小麦）对蚜虫攻击的代谢多样性尚未得到充分研究。在本研究中，我们比较了两种四倍体小麦基因型，即驯化型和野生型二粒小麦的代谢多样性。这些植株在对照生长室中生长，并接种蚜虫96小时。我们对有蚜虫和无蚜虫的植株进行的非靶向代谢分析显示，这两种基因型之间存在巨大差异。靶向代谢分析突出了植物激素生物合成的差异。栽培硬粒小麦中的蚜虫后代比野生二粒小麦中的少。总体而言，这些观察结果强调了利用小麦物种的自然多样性来更好地理解对害虫损害的代谢反应的潜力。
