Virulence of Alternaria Alternata Infecting Noni Associated with Production of Cell Wall Degrading Enzymes

Hubballi, Manjunath; Sornakili, Archana; Nakkeeran, S.; Anand, T.; Raguchander, T.

doi:10.2478/v10045-011-0016-x

Cited by 21 publications

(10 citation statements)

References 7 publications

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“…Previously morphological characterization was used to confirm A. maliand morphological identification of 48 isolates were closely resembled to those described byRoberts, 1924;Rotem, 1966;Ramegowda and Naik, 2008;Pusz, 2009;Hubballi et al, 2011.…”

Section: Int J Biosci 2016supporting

confidence: 58%

Cultural, morphological, pathogenic and molecular characterization of Alternaria mali associated with necrotic leaf spot of loquat

2016

Int. J. Biosci.

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In Pakistan, loquat (Eriobotrya japonica) in an emerging fruit and provides well economic return to growers.Percentage disease incidence of necrotic leaf spot (Alternaria mali) ranged from 25 to 46.16% in Taxila, Wahcant, Khanpur, Kalar Kahar, Choa Saiden Shan, Tret, Chatar and Murree. 48 isolates were characterized for cultural, morphological and pathogenic variations. Light to dark olivacious colonies were appraised, cottony to velvety with regular to irregular margins and variations in size and shape of conidia were observed between isolates. Length of conidiophores was ranging from 24.6 to 68.5 µm and nine was the highest septation in isolate ALT7WT1. Nucleotide sequences of inter transcribed spacer region (ITS1, 5.8S, ITS2) from 4 highly virulent isolates were submitted in the database of NCBI under accession numbersKR232489, KR232490, KT154010 and KT154011 respectively. Evolutionary history was computed with available sequences of A. mali, A. lternata, A. zinnae and A. tenuissima which were reported from Pakistan, USA, Sweden, Newzeland and India. Evolutionary tree showed4 different sub-trees and submitted sequences were observed in A. mali sub-tree. Amino acid sequences were exhibiting 100 to 99% genetic homology with A. mali isolate (FCBP1343) reported form Pakistan. Amino acid sequences were compared with FCBP1343 and differences at position number 18 (valine was replaced with glutamate), 57 (glutamine with leucine), 84 (alanine with glycine), 163 (glutamine instead of histidine) and 171 (serine was replaced with phenylalanine) were observed. Cultural, morphological, pathogenic and molecular characterization of A. mali associated with necrotic leaf spot of loquat was recorded first time in Pakistan.

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Section: Int J Biosci 2016supporting

confidence: 58%

Cultural, morphological, pathogenic and molecular characterization of Alternaria mali associated with necrotic leaf spot of loquat

2016

Int. J. Biosci.

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“…Similarly, Rai and Kumari (2009) observed loose, cottony, compact and dense colonies with light to dark black colour in A. alternata infecting Periwinkle. Hubballi et al (2011) noted variation in the pigmentation of fifteen A. alternata isolates producing black, brownish black, greenish black, brown and yellow pigmentation.…”

Section: Discussionmentioning

confidence: 98%

Cultural, Morphological and Pathogenic Characterization of Alternaria porri Causing Purple Blotch of Onion

Mohsin

Islam

Ahmmed

et al. 2016

Not Bot Horti Agrobo

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Twenty seven (27) isolates of Alternaria porri were isolated from diseased leaf samples collected from different onion growing regions of Bangladesh and characterized for cultural, morphological and pathogenic variabilities. A. porri colonies colony colour ranged between light to dark olivacious and grayish white with irregular, regular with concentric ring and regular without concentric ring shape. Margin of colonies were entire, irregular and wavy with effuse, fluffy and velvety texture. Isolates impregnated media with colour ranged between grey to brown on the reverse of the plates. Growth rate of isolates ranged between 2.433 and 3.950 mm/day with fast growth in isolate DSTR 02 and least in MMBH. Morphological variation in conidia production was between 7.720×10 3 to 47.02×10 3 per mm 2 with sporulation time 3.33 to 11.00 days. The conidial shape was straight to curve with light to deep brown colour. The number of horizontal and vertical separation in the conidia ranged from 3.00 to 6.00 × 1.00 to 2.00 with size from 11.20 to 39.20 × 4.76 to 11.43 µm. In pathogenicity test isolates also exhibited variations in size of the lesions (2.77 to 7.55 mm) produced on onion leaves. The results demonstrate existence of considerable variation in cultural, morphological, and pathogenic characters of A. porri isolates prevalent in Bangladesh environment.

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“…Pathogenicity have been described in many studies using detached leaf and attached leaf assay (Stammler et al, 2013;Tymon et al, 2015;Ramezani et al, 2019). Same results were also attained by Gannibal et al (2014) and Hubballi et al (2011), when the pathogenicity of A. solani isolates was observed in both potato and tomato using detached leaf assay. Some reports also showed that Alternaria spp.…”

Section: Discussionmentioning

confidence: 75%

Occurrence of Tomato Early Blight Disease and Associated Alternaria Species in Punjab, Pakistan

2021

THE JAPS

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Virulence of Alternaria Alternata Infecting Noni Associated with Production of Cell Wall Degrading Enzymes

Cited by 21 publications

References 7 publications

Cultural, morphological, pathogenic and molecular characterization of Alternaria mali associated with necrotic leaf spot of loquat

Cultural, morphological, pathogenic and molecular characterization of Alternaria mali associated with necrotic leaf spot of loquat

Cultural, Morphological and Pathogenic Characterization of Alternaria porri Causing Purple Blotch of Onion

Occurrence of Tomato Early Blight Disease and Associated Alternaria Species in Punjab, Pakistan

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