Dynamics of Yeast-like Symbiote and Its Relationship with the Virulence of Brown Planthopper, Nilaparvata lugens Stål, to Resistant Rice Varieties

AbstractThe feeding responses, growth and population development of Nilaparvata lugens (Stål) are quantified on a range of twelve susceptible or resistant host-plants. Paris of rice varieties carrying the Bph1, bph2 and Bph3 resistance genes are compared as hosts for N. lugens, and it is concluded that such notations do not adequately describe the diversity of plant resistance mechanisms. Evidence is presented for resistance mechanisms involving enhanced insect activity and gustatory responses to unacceptable phloem.

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EFFECTS OF POPULATION DENSITY AND HOST AVAILABILITY ON THE MIGRATION PROCESS OF BROWN PLANTHOPPER FED USING SUSCEPTIBLE AND RESISTANT RICE VARIETIES (PENGARUH KEPADATAN POPULASI DAN KETERSEDIAAN PAKAN TERHADAP PROSES MIGRASI WERENG BATANG COKELAT PADA PADI VARIETAS RENTAN DAN TAHAN)

Jurnal Perlindungan Tanaman Indonesia ◽

10.22146/jpti.17732 ◽

2017 ◽

Vol 20 (2) ◽

pp. 72

Author(s):

Imam Habibi ◽

Witjaksono Witjaksono ◽

Arman Wijonarko

Keyword(s):

Population Density ◽

Brown Planthopper ◽

Nilaparvata Lugens ◽

Susceptible Variety ◽

Resistant Variety ◽

Rice Varieties ◽

Host Availability ◽

Important Pest ◽

Nilaparvata Lugens Stål ◽

Field Failure

Brown planthopper, Nilaparvata lugens Stal. (Hemiptera: Delphacidae), is an important pest of rice. This pest can cause hopperburn and field failure. This research aimed to determine the effects of population density and host availability on migration of N. lugens. The criteria used to justify the effects of host availability and population density on migration of N. lugens were based the hardness and tannin tests of the rice stems, fecundity of N. lugens, and the life cycle of N. lugens. The research was conducted under the temperature of 29.42°C with relative humidity of 61% and Light 12: Dark 12 times, using ten pairs of N. lugens brachypterous (F0 constant) and then was added with five male adults on fifth days after the first infestation (F0 changed). The varieties used were IR64, as a resistant variety, and Ketan Lusi, as a susceptible variety. The results showed that the adding of the macropterous males did not affect the number of macropterous, because of that has been preplanned by the F0. Therefore, the percentage of existing macropterous was 51−52%. Wereng Batang Cokelat (WBC) merupakan salah satu hama tanaman padi yang sangat penting. Kerusakan parah dapat menyebabkan hopperburn dan puso (gagal panen). Tujuan penelitian ini adalah mengetahui pengaruh kepadatan populasi dan tanaman inang sebagai tempat migrasi WBC. Parameter yang dikaji untuk mengetahui pengaruh kepadatan populasi WBC dan tanaman inang tempat migrasi WBC berdasarkan tingkat kekerasan dan kandungan tanin batang tanaman padi, fekunditas WBC, dan siklus hidup WBC. Penelitian ini dilakukan pada temperatur 29.42˚C dengan kelembapan relatif 61% dan durasi siang hari 12 jam: durasi malam hari 12 jam. Metode yang dilakukan adalah dengan menggunakan 10 pasang imago WBC brakhiptera (F0 konstan), kemudian dilakukan penambahan 5 ekor imago jantan pada hari kelima setelah infestasi awal (F0 diubah). Varietas padi yang digunakan yaitu padi varietas IR64 sebagai varietas tahan dan ketan Lusi sebagai varietas rentan. Hasil penelitian menunjukkan bahwa penambahan imago jantan makroptera tidak berpengaruh terhadap jumlah keturunan makroptera yang dihasilkan, karena imago (F0) telah merencanakan terlebih dahulu keturunan yang akan dihasilkan. Oleh karena itu, persentase terbentuk keturunan imago makroptera berkisar antara 51−52%.

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The Development and Characterization of Near-Isogenic and Pyramided Lines Carrying Resistance Genes to Brown Planthopper with the Genetic Background of Japonica Rice (Oryza sativa L.)

Plants ◽

10.3390/plants8110498 ◽

2019 ◽

Vol 8 (11) ◽

pp. 498

Author(s):

Cuong D. Nguyen ◽

Holden Verdeprado ◽

Demeter Zita ◽

Sachiyo Sanada-Morimura ◽

Masaya Matsumura ◽

...

Keyword(s):

Oryza Sativa ◽

Resistance Genes ◽

Genetic Background ◽

Oryza Sativa L ◽

Rice Variety ◽

Brown Planthopper ◽

Nilaparvata Lugens ◽

Japonica Rice ◽

Rice Varieties ◽

Nilaparvata Lugens Stål

The brown planthopper (BPH: Nilaparvata lugens Stål.) is a major pest of rice, Oryza sativa, in Asia. Host plant resistance has tremendous potential to reduce the damage caused to rice by the planthopper. However, the effectiveness of resistance genes varies spatially and temporally according to BPH virulence. Understanding patterns in BPH virulence against resistance genes is necessary to efficiently and sustainably deploy resistant rice varieties. To survey BPH virulence patterns, seven near-isogenic lines (NILs), each with a single BPH resistance gene (BPH2-NIL, BPH3-NIL, BPH17-NIL, BPH20-NIL, BPH21-NIL, BPH32-NIL and BPH17-ptb-NIL) and fifteen pyramided lines (PYLs) carrying multiple resistance genes were developed with the genetic background of the japonica rice variety, Taichung 65 (T65), and assessed for resistance levels against two BPH populations (Hadano-66 and Koshi-2013 collected in Japan in 1966 and 2013, respectively). Many of the NILs and PYLs were resistant against the Hadano-66 population but were less effective against the Koshi-2013 population. Among PYLs, BPH20+BPH32-PYL and BPH2+BPH3+BPH17-PYL granted relatively high BPH resistance against Koshi-2013. The NILs and PYLs developed in this research will be useful to monitor BPH virulence prior to deploying resistant rice varieties and improve rice’s resistance to BPH in the context of regionally increasing levels of virulence.

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High Temperature Modifies Resistance Performances of Rice Varieties to Brown Planthopper, Nilaparvata lugens (Stål)

Rice Science ◽

10.1016/s1672-6308(09)60036-6 ◽

2010 ◽

Vol 17 (4) ◽

pp. 334-338 ◽

Cited By ~ 10

Author(s):

Bao-ju WANG ◽

Hong-xing XU ◽

Xu-song ZHENG ◽

Qiang FU ◽

Zhong-xian LU

Keyword(s):

High Temperature ◽

Brown Planthopper ◽

Nilaparvata Lugens ◽

Rice Varieties ◽

Nilaparvata Lugens Stål

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RESISTANCE EVALUATION OF MODERN RICE VARIETIES TO BROWN PLANTHOPPER Nilaparvata lugens STÅL

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA ◽

10.23960/jhptt.220157-164 ◽

2020 ◽

Vol 20 (2) ◽

pp. 157-164

Author(s):

Eko Hari Iswanto ◽

Dede Munawar ◽

Rahmini Rahmini

Keyword(s):

Brown Planthopper ◽

Nilaparvata Lugens ◽

Field Population ◽

Rice Varieties ◽

Resistance Evaluation ◽

Resistant Varieties ◽

Endemic Areas ◽

Loss Index ◽

Nilaparvata Lugens Stål

Resistance evaluation of modern rice varieties to brown planthopper Nilaparvata lugens STÅL. The research was performed to understand the resistance of modern rice varieties to the field population of brown planthopper (BPH). The research studied BPH settling preference, numbers of laid eggs, and functional plant loss index (FPLI) of resistant and susceptible rice varieties. The results showed BPH were less settle and laid fewer eggs on resistant varieties. BPH significantly settled longer on TN1 than other varieties after 24 hours. The numbers of eggs laid on rice resistant varieties (Inpari 13, Inpari 31, Inpari 33, RH, and PTB33) were fewer compared to TN1. FPLI value in TN1 was the highest among the tested rice varieties. Inpari 13 had better resistance to BPH compared to Inpari 31 and Inpari 33. In managing BPH in endemic areas, we recommend Inpari 13, Inpari 31, and Inpari 33 to be planted in rotation.

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