TY - JOUR
T1 - Genetic basis of ovicidal response to whitebacked planthopper (Sogatella furcifera Horváth) in rice (Oryza sativa L.)
AU - Yamasaki, Masanori
AU - Yoshimura, Atsushi
AU - Yasui, Hideshi
N1 - Funding Information:
We are grateful to Drs. Kazushige Sogawa and Yoshito Suzuki for providing the insects and for their helpful comments. We would like to thank Drs. Nobuaki Matsuyama, Naruto Furuya, Ikuo Miyajima, Masaru Matsumoto and Mr. Yoshito Seino for their guidance in improving the techniques for extraction of benzyl benzoate and gas chromatography analysis. We offer our thanks to Drs. Michael D. McMullen, Elsa Rubia-Sanchez and Paulino Laude Sanchez for their critical comments and help in correcting the English manuscript. This research was supported by the Ministry of Agriculture, Forestry and Fisheries; Kyushu National Agricultural Experiment Station and Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.
PY - 2003/9
Y1 - 2003/9
N2 - Rice (Oryza sativa L.) ovicidal response to the whitebacked planthopper (Sogatella furcifera Horváth) is characterized by formation of watery lesions and production of an ovicidal substance benzyl benzoate, which results in high egg mortality of whitebacked planthopper. A gene with ovicidal activity to whitebacked planthopper, designated Ovc, and four ovicidal quantitative trait loci (QTLs), qOVA-1-3, qOVA-4, qOVA-5-1 and qOVA-5-2 were identified using near isogenic lines with reciprocal genetic backgrounds of a non-ovicidal Indica variety IR24 and an ovicidal Japonica variety Asominori. Ovc and the four QTLs were mapped on chromosomes 6, 1, 4, 5 and 5, respectively. Ovc is the first gene identified that kills insect eggs in plants. The Asominori allele at Ovc was essential for increasing egg mortality and responsible for production of benzyl benzoate and formation of watery lesions. The Asominori alleles at qOVA-1-3, qOVA-5-1 and qOVA-5-2 increased egg mortality in the presence of Ovc. In contrast, the Asominori allele at qOVA-4 suppressed egg mortality, indicating that qOVA-4 caused transgressive segregation for egg mortality. It was concluded that Ovc and four ovicidal QTLs accounted for the majority of the phenotypic variance for the ovicidal response to whitebacked planthopper in Asominori.
AB - Rice (Oryza sativa L.) ovicidal response to the whitebacked planthopper (Sogatella furcifera Horváth) is characterized by formation of watery lesions and production of an ovicidal substance benzyl benzoate, which results in high egg mortality of whitebacked planthopper. A gene with ovicidal activity to whitebacked planthopper, designated Ovc, and four ovicidal quantitative trait loci (QTLs), qOVA-1-3, qOVA-4, qOVA-5-1 and qOVA-5-2 were identified using near isogenic lines with reciprocal genetic backgrounds of a non-ovicidal Indica variety IR24 and an ovicidal Japonica variety Asominori. Ovc and the four QTLs were mapped on chromosomes 6, 1, 4, 5 and 5, respectively. Ovc is the first gene identified that kills insect eggs in plants. The Asominori allele at Ovc was essential for increasing egg mortality and responsible for production of benzyl benzoate and formation of watery lesions. The Asominori alleles at qOVA-1-3, qOVA-5-1 and qOVA-5-2 increased egg mortality in the presence of Ovc. In contrast, the Asominori allele at qOVA-4 suppressed egg mortality, indicating that qOVA-4 caused transgressive segregation for egg mortality. It was concluded that Ovc and four ovicidal QTLs accounted for the majority of the phenotypic variance for the ovicidal response to whitebacked planthopper in Asominori.
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U2 - 10.1023/A:1026018821472
DO - 10.1023/A:1026018821472
M3 - Article
AN - SCOPUS:0142152539
SN - 1380-3743
VL - 12
SP - 133
EP - 143
JO - Molecular Breeding
JF - Molecular Breeding
IS - 2
ER -