Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response
Rice yellow mottle virus (RYMV) is the most harmful virus that affects irrigated and lowland rice in Africa. The RBe24 isolate of the virus is the most pathogenic strain in Benin. A total of 79 genotypes including susceptible IR64 (Oryza sativa) and the resistant TOG5681 (O. glaberrima) as checks we...
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| Format: | Article |
| Language: | English |
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Hanrimwon Publishing Company
2021-08-01
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| Series: | The Plant Pathology Journal |
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| Online Access: | http://www.ppjonline.org/upload/pdf/PPJ-OA-09-2020-0180.pdf |
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| author | Vital Kouessi Sixte Anato Yves Agnoun Joèl Houndjo Aderonke Oludare Clement Agbangla Malachy Akoroda Victor O. Adetimirin |
| author_facet | Vital Kouessi Sixte Anato Yves Agnoun Joèl Houndjo Aderonke Oludare Clement Agbangla Malachy Akoroda Victor O. Adetimirin |
| author_sort | Vital Kouessi Sixte Anato |
| collection | DOAJ |
| description | Rice yellow mottle virus (RYMV) is the most harmful virus that affects irrigated and lowland rice in Africa. The RBe24 isolate of the virus is the most pathogenic strain in Benin. A total of 79 genotypes including susceptible IR64 (Oryza sativa) and the resistant TOG5681 (O. glaberrima) as checks were screened for their reactions to RBe24 isolate of RYMV and the effects of silicon on the response of host plants to the virus investigated. The experiment was a three-factor factorial consisting of genotypes, inoculation level (inoculated vs. non-inoculated), and silicon dose (0, 5, and 10 g/plant) applied as CaSiO3 with two replications and carried out twice in the screen house. Significant differences were observed among the rice genotypes. Fifteen highly resistant and eight resistant genotypes were identified, and these were mainly O. glaberrima. Silicon application did not affect disease incidence and severity at 21 and 42 days after inoculation (DAI); it, however, significantly increased plant height of inoculated (3.6% for 5 g CaSiO3/plant and 6.3% for 10 g CaSiO3/plant) and non-inoculated (1.9% for 5 g CaSiO3/plant and 4.9% for 10 g CaSiO3/plant) plants at 42 DAI, with a reduction in the number of tillers (12.3% for both 5 and 10 g CaSiO3/plant) and leaves (26.8% for 5 g CaSiO3/plant and 28% for 10 g CaSiO3/plant) under both inoculation treatments. Our results confirm O. glaberrima germplasm as an important source of resistance to RYMV, and critical in developing a comprehensive strategy for the control of RYMV in West Africa. |
| first_indexed | 2024-04-12T06:06:48Z |
| format | Article |
| id | doaj.art-0276d616b1964a1bb7e03c88a6081235 |
| institution | Directory Open Access Journal |
| issn | 1598-2254 2093-9280 |
| language | English |
| last_indexed | 2024-04-12T06:06:48Z |
| publishDate | 2021-08-01 |
| publisher | Hanrimwon Publishing Company |
| record_format | Article |
| series | The Plant Pathology Journal |
| spelling | doaj.art-0276d616b1964a1bb7e03c88a60812352022-12-22T03:44:50ZengHanrimwon Publishing CompanyThe Plant Pathology Journal1598-22542093-92802021-08-0137437538810.5423/PPJ.OA.09.2020.01802262Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host ResponseVital Kouessi Sixte Anato0Yves Agnoun1Joèl Houndjo2Aderonke Oludare3Clement Agbangla4Malachy Akoroda5Victor O. Adetimirin6 Pan African University Institute of Life and Earth Sciences (PAULESI), University of Ibadan, Ibadan 200284, Nigeria Université Nationale d’Agriculture (UNA), 01 B.P. 55, Porto-Novo, Benin Pan African University Institute of Life and Earth Sciences (PAULESI), University of Ibadan, Ibadan 200284, Nigeria AfricaRice, 01 B.P. 2031, Cotonou, Benin University of Abomey Calavi (UAC), 01 BP: 526, Cotonou, Benin Pan African University Institute of Life and Earth Sciences (PAULESI), University of Ibadan, Ibadan 200284, Nigeria Pan African University Institute of Life and Earth Sciences (PAULESI), University of Ibadan, Ibadan 200284, NigeriaRice yellow mottle virus (RYMV) is the most harmful virus that affects irrigated and lowland rice in Africa. The RBe24 isolate of the virus is the most pathogenic strain in Benin. A total of 79 genotypes including susceptible IR64 (Oryza sativa) and the resistant TOG5681 (O. glaberrima) as checks were screened for their reactions to RBe24 isolate of RYMV and the effects of silicon on the response of host plants to the virus investigated. The experiment was a three-factor factorial consisting of genotypes, inoculation level (inoculated vs. non-inoculated), and silicon dose (0, 5, and 10 g/plant) applied as CaSiO3 with two replications and carried out twice in the screen house. Significant differences were observed among the rice genotypes. Fifteen highly resistant and eight resistant genotypes were identified, and these were mainly O. glaberrima. Silicon application did not affect disease incidence and severity at 21 and 42 days after inoculation (DAI); it, however, significantly increased plant height of inoculated (3.6% for 5 g CaSiO3/plant and 6.3% for 10 g CaSiO3/plant) and non-inoculated (1.9% for 5 g CaSiO3/plant and 4.9% for 10 g CaSiO3/plant) plants at 42 DAI, with a reduction in the number of tillers (12.3% for both 5 and 10 g CaSiO3/plant) and leaves (26.8% for 5 g CaSiO3/plant and 28% for 10 g CaSiO3/plant) under both inoculation treatments. Our results confirm O. glaberrima germplasm as an important source of resistance to RYMV, and critical in developing a comprehensive strategy for the control of RYMV in West Africa.http://www.ppjonline.org/upload/pdf/PPJ-OA-09-2020-0180.pdfbeninricerymvsilicon |
| spellingShingle | Vital Kouessi Sixte Anato Yves Agnoun Joèl Houndjo Aderonke Oludare Clement Agbangla Malachy Akoroda Victor O. Adetimirin Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response The Plant Pathology Journal benin rice rymv silicon |
| title | Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response |
| title_full | Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response |
| title_fullStr | Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response |
| title_full_unstemmed | Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response |
| title_short | Resistance of and Genotypes to RBe24 Isolate of Rice Yellow Mottle Virus in Benin and Effects of Silicon on Host Response |
| title_sort | resistance of and genotypes to rbe24 isolate of rice yellow mottle virus in benin and effects of silicon on host response |
| topic | benin rice rymv silicon |
| url | http://www.ppjonline.org/upload/pdf/PPJ-OA-09-2020-0180.pdf |
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