Defense Responses of Different Rice Varieties Affect Growth Performance and Food Utilization of Cnaphalocrocis medinalis Larvae

IF 4.8 1区农林科学 Q1 AGRONOMY Rice Pub Date : 2024-01-20 DOI:10.1186/s12284-024-00683-2

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Abstract

Rice leaf folder, Cnaphalocrocis medinalis (Guenée), is one of the most serious pests on rice. At present, chemical control is the main method for controlling this pest. However, the indiscriminate use of chemical insecticides has non-target effects and may cause environmental pollution. Besides, leaf curling behavior by C. medinalis may indirectly reduce the efficacy of chemical spray. Therefore, it is crucial to cultivate efficient rice varieties resistant to this pest. Previous studies have found that three different rice varieties, Zhongzao39 (ZZ39), Xiushui134 (XS134), and Yongyou1540 (YY1540), had varying degrees of infestation by C. medinalis. However, it is currently unclear whether the reason for this difference is related to the difference in defense ability of the three rice varieties against the infestation of C. medinalis. To explore this issue, the current study investigated the effects of three rice varieties on the growth performance and food utilization capability of the 4th instar C. medinalis. Further, it elucidated the differences in defense responses among different rice varieties based on the differences in leaf physiological and biochemical indicators and their impact on population occurrence. The results showed that the larval survival rate was the lowest, and the development period was significantly prolonged after feeding on YY1540. This was not related to the differences in leaf wax, pigments, and nutritional components among the three rice varieties nor to the feeding preferences of the larvae. The rate of superoxide anion production, hydrogen peroxide content, and the activity of three protective enzymes were negatively correlated with larval survival rate, and they all showed the highest in YY1540 leaves. Compared to other tested varieties, although the larvae feeding on YY1540 had higher conversion efficiency of ingested food and lower relative consumption rate, their relative growth was faster, indicating stronger food utilization capability. However, they had a lower accumulation of protein. This suggests that different rice varieties had different levels of oxidative stress after infestation by C. medinalis. The defense response of YY1540 was more intense, which was not conducive to the development of the larvae population. These results will provide new insights into the interaction mechanism between different rice varieties and C. medinalis and provide a theoretical basis for cultivating rice varieties resistant to this pest.

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不同水稻品种的防御反应影响中肋栉水母幼虫的生长性能和食物利用率

摘要稻纵卷叶螟（Cnaphalocrocis medinalis (Guenée)）是水稻上最严重的害虫之一。目前，化学防治是控制这种害虫的主要方法。然而，滥用化学杀虫剂会对非目标产生影响，并可能造成环境污染。此外，褐飞虱的卷叶行为会间接降低化学药剂的药效。因此，培育抗这种害虫的高效水稻品种至关重要。之前的研究发现，中早 39（ZZ39）、秀水 134（XS134）和甬优 1540（YY1540）这三个不同的水稻品种都有不同程度的褐飞虱侵染。然而，目前还不清楚造成这种差异的原因是否与这三个水稻品种对介壳虫侵染的防御能力不同有关。为了探讨这一问题，本研究调查了三个水稻品种对介壳虫第四龄的生长表现和食物利用能力的影响。此外，本研究还根据叶片生理生化指标的差异，阐明了不同水稻品种在防御反应上的差异及其对种群发生的影响。结果表明，取食 YY1540 后，幼虫存活率最低，发育期明显延长。这与三个水稻品种的叶蜡、色素和营养成分差异无关，也与幼虫的取食偏好无关。超氧阴离子产生率、过氧化氢含量和三种保护酶的活性与幼虫存活率呈负相关，且在 YY1540 叶片上均表现为最高。与其他试验品种相比，虽然取食 YY1540 的幼虫摄入食物的转化效率较高，相对消耗率较低，但其相对生长速度较快，表明其对食物的利用能力较强。但是，它们的蛋白质积累较低。这表明不同品种的水稻在受到介壳虫侵染后会产生不同程度的氧化应激。YY1540 的防御反应更为强烈，不利于幼虫种群的发展。这些结果将为了解不同水稻品种与介壳虫之间的相互作用机制提供新的视角，并为培育抗这种害虫的水稻品种提供理论依据。

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来源期刊

Rice AGRONOMY-

CiteScore

10.10

自引率

3.60%

发文量

审稿时长

>12 weeks

期刊介绍： Rice aims to fill a glaring void in basic and applied plant science journal publishing. This journal is the world''s only high-quality serial publication for reporting current advances in rice genetics, structural and functional genomics, comparative genomics, molecular biology and physiology, molecular breeding and comparative biology. Rice welcomes review articles and original papers in all of the aforementioned areas and serves as the primary source of newly published information for researchers and students in rice and related research.