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The plant of Kunming has made new progress in resisting the feeding of potato monophagous insects and broad-eating insects in jasmonic acid

 Last Update: 2022-10-20
 Source: Internet
 Author: User

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The potato has become the fourth largest food crop in China, and China's potato planting area and total output rank first in the world, but its yield will be seriously affected
by pests.
The potato tuber moth (Phthorimaea operculella, PTM) is a specialist-feeding insect that can cause up to 70% yield loss; The night beet moth (Spodoptera exigua, BAW) is a broad-feeding insect and another major pest of the potato
.
At present, the control of two potato pests is still mainly based on spraying pesticides, and obtaining genetically improved strains with enhanced insect resistance of potatoes is very important
for green and sustainable pest control.

Recently, the chemical ecology research team of plant interaction with other organisms at the Kunming Institute of Botany, Chinese Academy of Sciences obtained plant endogenous JA-Ile by blocking the metabolism of jasmonic acid-isoleucine (JA-Ile), an important insect-resistant signal Elevated levels of potato transgenic strains
.
However, this transgenic strain only enhanced the potato's resistance to BAW and did not increase resistance to PTM, despite PTM-induced levels of some of the defensive chemicals downstream of JA-ile BAW induces even higher
.
The study suggests that increasing the endogenous JA-Ile content of plants can enhance potato resistance to broad-eating insects, and specialized insects such as PTM may have evolved effective detoxification mechanisms to counter JA-Ile-induced insect-resistant secondary metabolites
。

Recently, the relevant research results are Elevating herbivore-induced JA-Ile enhances potato resistance to the polyphagous beet armyworm but not to the oligophagous potato tuber moth The title was published online in
Pest Management Science, a leading journal in the field of agriculture and insects.
Li Yi, a master student jointly trained by Kunming Institute of Botany and Shaanxi Normal University, and Tang Jinxiang, a doctoral student of Kunming Institute of Botany, are the co-first authors of the paper, and Associate Professor Wang Lei is the corresponding author
of the paper.
The research was supported by the special fund for local science and technology development guided by the central government (202107AC110014) and the Yunnan Science and Technology into Yunnan Project (202003AD150005).

Link to the article

Fig.
1 The increase of endogenous JA-Ile content increased the resistance of potatoes to the night beet moth, but did not improve the resistance to the tuber moth

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