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Nitrate non-utilizing mutants and vegetative compatibility groups of Fusarium proliferatum and F. sacchari isolated from rice in the Peninsular Malaysia and Kalimantan, Indonesia

100%

Zainudin N. A. I. M., Ismail N. A., Nor N. M. I. M., Razak A. A., Sidique S. N. M., Salleh B.

Journal of Plant Protection Research

2009

tom 49

nr 2

229-235

A total of 26 isolates of Fusarium proliferatum and F. sacchari were isolated from rice in the Peninsular Malaysia and Kalimantan, Indonesia. Spontaneous chlorate-resistant sectors (CRSs) were recovered from all wild type of both Fusarium species when cultured on two chlorate media. The non-utilizing (nit) mutants were generated as crn (chlorate resistant, nitrate utilizing), nit1, nit3 and nitM based on phenotyping growth-types on diagnostic media with different sources of nitrogen. The nit mutants were paired on minimal medium (MM) for examining the vegetative compatibility. The majority of nit mutants (32.3-46.5%) recovered were nit1. Eight and seven vegetative compatibility groups (VCGs) of F. proliferatum and F. sacchari were identified, respectively. The isolates of F. proliferatum and F. sacchari were genetically diverse as shown by the number and distribution of the VCGs. No strong correlation was observed between VCGs of both species and location.

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Relationship between pathogenicity, race and vegetative compatibility grouping among Algerian populations of Fusarium oxysporum f. sp. pisi causing pea wilt

100%

Merzoug A., Belabid L.

Journal of Plant Protection Research

2017

tom 57

nr 4

Fusarium oxysporum f. sp. pisi (FOP) is a significant and destructive pathogen of field pea in Algeria. In the present study, 50 isolates of F. oxysporum f. sp. pisi, the causal agent of pea (Pisum sativum) wilt, collected from different parts of western Algeria and representing four races of the pathogen, were analyzed for virulence. The wilt incidence ranged from 6.66 to 88.33% on a highly susceptible cultivar (Little Marvel). Twenty-one isolates belonging to four races of FOP and one nonpathogenic F. oxysporum (FO) isolate were analyzed for vegetative compatibility in order to reveal the genetic structure of the population and to check the reliability of the method for the identification of physiological races of FOP. Obtained results showed that the FOP isolates could be classified into four main vegetative compatibility groups (VCGs) that corresponded to races l, 2A, 2B and 5. The race 6 isolate fell into the race 1 VCG. To our knowledge, this is the first such study in Algeria of its kind.

Ograniczanie wyników

2 Journal of Plant Protection Research

1 Belabid L.

1 Ismail N. A.

1 Merzoug A.

1 Nor N. M. I. M.

1 Razak A. A.

1 Salleh B.

1 Sidique S. N. M.

1 Zainudin N. A. I. M.

1 2017

1 2009

Wyniki wyszukiwania

Nitrate non-utilizing mutants and vegetative compatibility groups of Fusarium proliferatum and F. sacchari isolated from rice in the Peninsular Malaysia and Kalimantan, Indonesia

Relationship between pathogenicity, race and vegetative compatibility grouping among Algerian populations of Fusarium oxysporum f. sp. pisi causing pea wilt