Impacts of galling on the distributions of plant metabolites can vary greatly with plant genotype. In this study, two Eucalyptus genotypes with different resistance levels were chosen, and the levels of several primary and secondary metabolites, as well as phytohormones in galls and ungalled portions of galled leaves infested by the gall wasp Leptocybe invasa, and gall-free (control) leaves were compared. It was found that galls of both two plant genotypes accumulated higher concentrations of carbon, total phenolics, gibberellins (GA), and abscisic acid (ABA) but had lower chlorophyll content than ungalled portions. However, galls of highly susceptible genotype contained higher nitrogen (N), cytokinins (CK), GA, and chlorophyll content but lower C/N ratio, total phenolics, tannins, and ABA than less susceptible genotype. For both two genotypes, ABA in galls and ungalled portions increased compared with adjacent control leaves. CK and GA levels increased in galls but decreased in ungalled portions of highly susceptible genotype, compared with control leaves. For less susceptible genotype, CK levels increased in both galls and ungalled portions compared with control leaves, but higher levels of tannins, total phenolics, and GA were only detected in galls. Therefore, our study found insufficient evidence that the impact of galling on the distributions of these metabolites and phytohormones extended beyond the attacked leaves, because they varied greatly with plant genotype.

中文翻译：

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瘿蜂 Leptocybe invasa（膜翅目：Eulophidae）对桉树的咬伤影响因植物基因型而异

磨损对植物代谢物分布的影响可能因植物基因型而异。在这项研究中，选择了两种具有不同抗性水平的桉树基因型，并确定了被瘿蜂 Leptocybe invasa 和无瘿（对照) 叶进行了比较。发现两种植物基因型的瘿体积累了更高浓度的碳、总酚类物质、赤霉素 (GA) 和脱落酸 (ABA)，但叶绿素含量低于未瘿体部分。然而，高度敏感基因型的瘿含有较高的氮 (N)、细胞分裂素 (CK)、GA 和叶绿素含量，但与较不敏感的基因型相比，C/N 比、总酚类、单宁和 ABA 含量较低。对于这两种基因型，与相邻的对照叶片相比，瘿和未瘿部分中的 ABA 增加。与对照叶片相比，瘿中 CK 和 GA 水平增加，但在高度易感基因型的未瘿部分中降低。对于较不敏感的基因型，与对照叶片相比，瘿和未瘿部分的 CK 水平均增加，但仅在瘿中检测到更高水平的单宁、总酚和 GA。因此，我们的研究发现没有足够的证据表明磨损对这些代谢物和植物激素分布的影响超出了受攻击的叶子，因为它们随植物基因型变化很大。对于较不敏感的基因型，与对照叶片相比，瘿和未瘿部分的 CK 水平均增加，但仅在瘿中检测到更高水平的单宁、总酚和 GA。因此，我们的研究发现没有足够的证据表明磨损对这些代谢物和植物激素分布的影响超出了受攻击的叶子，因为它们随植物基因型变化很大。对于较不敏感的基因型，与对照叶片相比，瘿和未瘿部分的 CK 水平均增加，但仅在瘿中检测到更高水平的单宁、总酚和 GA。因此，我们的研究发现没有足够的证据表明磨损对这些代谢物和植物激素分布的影响超出了受攻击的叶子，因为它们随植物基因型变化很大。