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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Main Authors: Rungrat Vareeket, Kasem Soytong
Format: Article
Language:English
Published: Universitas Brawijaya 2020-01-01
Series:AGRIVITA Journal of Agricultural Science
Subjects:
Online Access:https://agrivita.ub.ac.id/index.php/agrivita/article/view/2181
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spelling 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
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AT kasemsoytong rhodospirillumcentenumanewgrowthstimulantandantagonisticbacteriaagainstleafspotofricecausedbycurvularialunata
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