Comparison on Morphology and Number of Yeastlike Symbionts in Different Host-Associated Populations of Nilaparvata lugens

SUN Jia-yin,FU Qiang* ,LAI Feng-xiang,WANG Wei-xia

doi:10.3969/j.issn.10017216.2009.05.15

2009 , Vol. 23 >Issue 5: 546 - 550

DOI: https://doi.org/10.3969/j.issn.10017216.2009.05.15

研究报告

Comparison on Morphology and Number of Yeastlike Symbionts in Different Host-Associated Populations of Nilaparvata lugens

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China National Rice Research Institute, Hangzhou 310006, China；*Corresponding author, E-mail: qiangfu1@yahoo.com.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2009-09-10

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Abstract

he morphology and number of yeastlike symbionts(YLS) in three hostassociated populations of Nilaparvata lugens(TN1 population, Mudgo population and ASD7 population) which had been reared on rice varieties TN1 (susceptible), Mudgo (harboring resistance gene Bph1) and ASD7 (harboring resistance gene bph2) for more than 117 generations, respectively were studied. There was significant difference in the YLS size among the three populations. ASD7 population had the longest and widest YLS, followed by TN1 population and Mudgo population. There was no significant difference in lengthwidth ratio of YLS among the three populations. As for the YLS number of N. lugens, the difference among the populations varied with sex of N. lugens. Females had no significant difference in most cases, while males had. The males of TN1 population harbored much more YLSs than those of both Mudgo and ASD7 populations. There was no significant difference between the later two populations. The amount of YLS in N. lugens males increased significantly when TN1 populations were reared on ASD7 or Mudgo for one generation. On the contrast, the amount in N. lugens males decreased significantly when ASD7 and Mudgo populations were reared on TN1. But no significant difference was found for females when their rearing rice varieties were changed from susceptible variety (TN1) to resistant ones (ASD7 or Mudgo). In addition, there was no significant change in YLS number when Mudgo population were reared on ASD7 or ASD7 population on Mudgo.

Key words： Nilaparvata lugens; yeastlike symbionts; hostassociated population; virulence

Cite this article

SUN Jia-yin,FU Qiang* ,LAI Feng-xiang,WANG Wei-xia .

Comparison on Morphology and Number of Yeastlike Symbionts in Different Host-Associated Populations of Nilaparvata lugens

[J]. Chinese Journal OF Rice Science, 2009 , 23(5) : 546 -550 . DOI: 10.3969/j.issn.10017216.2009.05.15

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