Assessment of tolerance and resistance of inbred rice cultivars to combined infestations of rice water weevil and stemborers

2021 ◽  
Author(s):  
James M. Villegas ◽  
Blake E. Wilson ◽  
Michael J. Stout
Keyword(s):  
Rice Cultivars ◽  
Rice Water Weevil ◽  
Rice Water

scholarly journals Chromosome Unipolar Division and Low Expression of Tws May Cause Parthenogenesis of Rice Water Weevil (Lissorhoptrus oryzophilus Kuschel)

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 278
Author(s):  
Pengcheng Wang ◽  
Fangyuan Yang ◽  
Zhuo Ma ◽  
Runzhi Zhang
Keyword(s):  
Drosophila Melanogaster ◽  
Quantitative Pcr ◽  
Ovarian Tissue ◽  
Expression Patterns ◽  
Meiotic Spindle ◽  
Lissorhoptrus Oryzophilus ◽  
Rice Water Weevil ◽  
Rice Water ◽  
Beijing China ◽  
Low Expression

Rice water weevil (RWW) is divided into two types of population, triploid parthenogenesis and diploid bisexual reproduction. In this study, we explored the meiosis of triploid parthenogenesis RWW (Shangzhuang Town, Haidian District, Beijing, China) by marking the chromosomes and microtubules of parthenogenetic RWW oocytes via immunostaining. The immunostaining results show that there is a canonical meiotic spindle formed in the triploid parthenogenetic RWW oocytes, but chromosomes segregate at only one pole, which means that there is a chromosomal unipolar division during the oogenesis of the parthenogenetic RWW. Furthermore, we cloned the conserved sequences of parthenogenetic RWW REC8 and Tws, and designed primers based on the parthenogenetic RWW sequence to detect expression patterns by quantitative PCR (Q-PCR). Q-PCR results indicate that the expression of REC8 and Tws in ovarian tissue of bisexual Drosophila melanogaster is 0.98 and 10,000.00 times parthenogenetic RWW, respectively (p < 0.01). The results show that Tws had low expression in parthenogenetic RWW ovarian tissue, and REC8 was expressed normally. Our study suggests that the chromosomal unipolar division and deletion of Tws may cause parthenogenesis in RWW.

The Symbiotic BacteriaNardonellain Rice Water Weevil (Coleoptera: Curculionidae): Diversity, Density, and Associations With Host Reproduction

2016 ◽  
Vol 109 (3) ◽  
pp. 415-423 ◽  
Author(s):  
Xu Huang ◽  
Yunshan Huang ◽  
Jingyu Zhang ◽  
Fang Lu ◽  
Jing Wei ◽  
...  
Keyword(s):  
Rice Water Weevil ◽  
Rice Water

scholarly journals Efficacy of Pyrethroid Foliar Application Against Rice Water Weevil, 2018

2018 ◽  
Vol 43 (1) ◽  
Author(s):  
James M Villegas ◽  
Blake E Wilson ◽  
Michael J Stout
Keyword(s):  
Foliar Application ◽  
Rice Water Weevil ◽  
Rice Water

Identification and Biological Role of the EndosymbiontsWolbachiain Rice Water Weevil (Coleoptera: Curculionidae)

2012 ◽  
Vol 41 (3) ◽  
pp. 469-477 ◽  
Author(s):  
Shu-Juan Chen ◽  
Fang Lu ◽  
Jia-An Cheng ◽  
Ming-Xing Jiang ◽  
Michael O. Way
Keyword(s):  
Biological Role ◽  
Rice Water Weevil ◽  
Rice Water
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