Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata
The research objectives were to find Rhodospirillum spp. to promote plant growth and as antagonists to control leaf spot of rice. The results showed that rice var. RD41 and Pitsanulok 2 (PL2) had leaf spot caused by Curvularia lunata. R. centenum is gram negative, mobile cell motility and negative o...
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doaj-98f45c9d52b640e0b45bb0df57f4fc7f2020-11-25T03:20:03ZengUniversitas BrawijayaAGRIVITA Journal of Agricultural Science0126-05372477-85162020-01-0142116016710.17503/agrivita.v41i0.2181505Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunataRungrat Vareeket0Kasem SoytongDepartment of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, ThailandThe research objectives were to find Rhodospirillum spp. to promote plant growth and as antagonists to control leaf spot of rice. The results showed that rice var. RD41 and Pitsanulok 2 (PL2) had leaf spot caused by Curvularia lunata. R. centenum is gram negative, mobile cell motility and negative of gelatin activity test. SM41 and 61 showed glucose and lactose and/or sucrose fermentation activity, but SM72 and 92 were non-fermented activity. Isolates of R. centenum were antagonized C. lunata, a leaf spot pathogen. R. centenum expressed for ability to produce amylase, protease and lipase. R. centenum isolates SM41, SM61, SM72, and SM92 with C. lunata causing leaf spot and seed-borne fungus. In addition, the inoculated seeds var. RD 41 and Pitsanulok 2 (PL2) applied R. centenum 41, 61, 72 and 79 gave significantly better seed germination, shoot and root length. Isolate SM41 reduced disease incidence in rice var. RD41 which the disease index was on level 2 when the inoculated one was level 5. Isolate SM61 showed the disease index of level 2 but the inoculated control was level 5. It is the first report that R. centenum plays the role for growth stimulant and biological control agents against leaf spot of rice caused by C. lunata.https://agrivita.ub.ac.id/index.php/agrivita/article/view/2181curvularia lunatagrowth stimulateleaf spot of ricephotosynthesizing bacteriarice |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rungrat Vareeket Kasem Soytong |
spellingShingle |
Rungrat Vareeket Kasem Soytong Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata AGRIVITA Journal of Agricultural Science curvularia lunata growth stimulate leaf spot of rice photosynthesizing bacteria rice |
author_facet |
Rungrat Vareeket Kasem Soytong |
author_sort |
Rungrat Vareeket |
title |
Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata |
title_short |
Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata |
title_full |
Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata |
title_fullStr |
Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata |
title_full_unstemmed |
Rhodospirillum centenum, A New Growth Stimulant and Antagonistic Bacteria Against Leaf Spot of Rice Caused by Curvularia lunata |
title_sort |
rhodospirillum centenum, a new growth stimulant and antagonistic bacteria against leaf spot of rice caused by curvularia lunata |
publisher |
Universitas Brawijaya |
series |
AGRIVITA Journal of Agricultural Science |
issn |
0126-0537 2477-8516 |
publishDate |
2020-01-01 |
description |
The research objectives were to find Rhodospirillum spp. to promote plant growth and as antagonists to control leaf spot of rice. The results showed that rice var. RD41 and Pitsanulok 2 (PL2) had leaf spot caused by Curvularia lunata. R. centenum is gram negative, mobile cell motility and negative of gelatin activity test. SM41 and 61 showed glucose and lactose and/or sucrose fermentation activity, but SM72 and 92 were non-fermented activity. Isolates of R. centenum were antagonized C. lunata, a leaf spot pathogen. R. centenum expressed for ability to produce amylase, protease and lipase. R. centenum isolates SM41, SM61, SM72, and SM92 with C. lunata causing leaf spot and seed-borne fungus. In addition, the inoculated seeds var. RD 41 and Pitsanulok 2 (PL2) applied R. centenum 41, 61, 72 and 79 gave significantly better seed germination, shoot and root length. Isolate SM41 reduced disease incidence in rice var. RD41 which the disease index was on level 2 when the inoculated one was level 5. Isolate SM61 showed the disease index of level 2 but the inoculated control was level 5. It is the first report that R. centenum plays the role for growth stimulant and biological control agents against leaf spot of rice caused by C. lunata. |
topic |
curvularia lunata growth stimulate leaf spot of rice photosynthesizing bacteria rice |
url |
https://agrivita.ub.ac.id/index.php/agrivita/article/view/2181 |
work_keys_str_mv |
AT rungratvareeket rhodospirillumcentenumanewgrowthstimulantandantagonisticbacteriaagainstleafspotofricecausedbycurvularialunata AT kasemsoytong rhodospirillumcentenumanewgrowthstimulantandantagonisticbacteriaagainstleafspotofricecausedbycurvularialunata |
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