DISTRIBUTION AND DIVERSITY OF FUSARIUM SPECIES ASSOCIATED WITH GRASSES IN TEN STATES THROUGHOUT PENINSULAR MALAYSIA
AbstractFusariumÂ is one ofÂ Â theÂ important genera associated with grasses as saprophytes, endophytes andÂ pathogens. AÂ study wasÂ carriedÂ outÂ onÂ distributionÂ andÂ diversityÂ ofÂ FusariumÂ species associatedÂ withÂ twoÂ groupsÂ ofÂ Â grassesÂ inÂ 10Â statesÂ throughoutÂ PeninsularÂ MalaysiaÂ i.e. agriculturalÂ grassesÂ (OryzaÂ sativaÂ andÂ SaccharumÂ officinarum)Â andÂ non-agriculturalÂ grasses (Axonopus compressus, Centhotheca lappacea, Chloris barbata, Crysopogon aciculatus, Cyanadon dactylon, DactylocteniumÂ aegyptium, DigitariaÂ ciliaris,Â EchinochloaÂ colona,Â EleusineÂ indica,Â EragrostisÂ amabilis, Eragrostis malayana, Eragrostis uniloides, Ischaemum magnum, Panicum brevifolium, Panicum millaneum, Panicum repens, PaspalumÂ commersonii, PaspalumÂ conjugatum, Paspalum orbiculare, Pennisetum purpureum, SacciolepisÂ indica, Sporobolus diander and SporobolusÂ indicus). AÂ total ofÂ 474Â isolates were single-spored andÂ identified by morphological characteristics. F.Â semitectum wasÂ frequentlyÂ isolated (23.6%), followed by F. sacchari and F. fujikuroi with 15.4% and 14.6%, respectively. The other nine species were F. solani (10.3%), F. proliferatum (8.9%), F. oxysporum (7.4%), F. subglutinans (6.5%), F.Â equisetiÂ (5.5%), F.Â verticillioidesÂ (3.4%), F.Â compactumÂ (2.5%), F.Â chlamydosporumÂ (1.1%) and F. longipes (0.8%). Based on the Shannon-Weiner Index, F. solani was the highest (H' = 2.62) isolated from grasses. Species ofÂ Fusarium from O. sativa were widely diverse with 11 species, followed by non-agricultural grasses with nine species and S. officinarum with only six species. ThisÂ isÂ theÂ firstÂ report on diversity ofÂ Fusarium associated with grassesÂ in Malaysia.Key words: OryzaÂ sativa,Â SaccharumÂ officinarum,Â non-agriculturalÂ grass,Â FusariumÂ species, diversityÂ and Gramineae
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