Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13931
ชื่อเรื่อง: Plant growth-promoting traits of epiphytic and endophytic yeasts isolated from rice and sugar cane leaves in Thailand
ผู้แต่ง: Nutaratat P.
Srisuk N.
Arunrattiyakorn P.
Limtong S.
Keywords: biochemistry
biocontrol agent
biotechnology
endophyte
enzyme activity
epiphyte
growth rate
hormone
leaf
rice
sugar cane
yeast
antagonism
cells and cell components
chemical compound
inorganic compound
isolated population
pathogen
Thailand
Cryptococcus flavus
Rhodosporidium
Rhodosporidium paludigenum
Saccharum
Torulaspora
Torulaspora globosa
ammonia
calcium phosphate
catalase
indoleacetic acid
indoleacetic acid derivative
phytohormone
polyamine
siderophore
zinc oxide
classification
endophyte
growth, development and aging
isolation and purification
metabolism
microbiology
plant development
plant leaf
rice
sugarcane
Thailand
yeast
Ammonia
Calcium Phosphates
Catalase
Endophytes
Indoleacetic Acids
Oryza sativa
Plant Development
Plant Growth Regulators
Plant Leaves
Polyamines
Saccharum
Siderophores
Thailand
Yeasts
Zinc Oxide
วันที่เผยแพร่: 2014
บทคัดย่อ: A total of 1035 yeast isolates, obtained from rice and sugar cane leaves, were screened primarily for indole-3-acetic acid (IAA) production. Thirteen isolates were selected, due to their IAA production ranging from 1.2 to 29.3mgg-1 DCW. These isolates were investigated for their capabilities of calcium phosphate and ZnO3 solubilisation, and also for production of NH3, polyamine, and siderophore. Their 1-aminocyclopropane-1-carboxylate (ACC) deaminase, catalase and fungal cell wall-degrading enzyme activities were assessed. Their antagonism against rice fungal pathogens was also evaluated. Strain identification, based on molecular taxonomy, of the thirteen yeast isolates revealed that four yeast species - i.e. Hannaella sinensis (DMKU-RP45), Cryptococcus flavus (DMKU-RE12, DMKU-RE19, DMKU-RE67, and DMKU-RP128), Rhodosporidium paludigenum (DMKU-RP301) and Torulaspora globosa (DMKU-RP31) - were capable of high IAA production. Catalase activity was detected in all yeast strains tested. The yeast R. paludigenum DMKU-RP301 was the best IAA producer, yielding 29.3mgg-1 DCW, and showed the ability to produce NH3 and siderophore. Different levels of IAA production (7.2-9.7mgg-1 DCW) were found in four strains of C. flavus DMKU-RE12, DMKU-RE19, and DMKU-RE67, which are rice leaf endophytes, and strain DMKU-RP128, which is a rice leaf epiphyte. NH3 production and carboxymethyl cellulase (CMCase) activity was also detected in these four strains. Antagonism to fungal plant pathogens and production of antifungal volatile compounds were exhibited in T. globosa DMKU-RP31, as well as a moderate level of IAA production (4.9mgg-1 DCW). The overall results indicated that T. globosa DMKU-RP31 might be used in two ways: enhancing plant growth and acting as a biocontrol agent. In addition, four C. flavus were also found to be strains of interest for optimal IAA production. © 2014 .
URI: https://ir.swu.ac.th/jspui/handle/123456789/13931
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905733115&doi=10.1016%2fj.funbio.2014.04.010&partnerID=40&md5=16f95ccdb082422601116e5656cb161d
ISSN: 18786146
Appears in Collections:Scopus 1983-2021

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