First report of <i>Calonectria cerciana</i> causing leaf blight of <i>Eucalyptus</i> in northern India

Bose, Ratnaboli; Pandey, Shailesh; Joshi, Pawan Kumar; Banerjee, Sabyasachi; Pandey, Amit; Bhandari, Maneesh S.

doi:10.1111/efp.12658

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…The molecular details of multiple DNA sequences have been applied in identifying fungal species [ 42 , 43 ]. For instance, Bose et al [ 47 ] used two DNA sequences of tub2 and tef1-α to confirm the species of C . cerciana causing leaf blight of Eucalyptus in northern India.…”

Section: Discussionmentioning

confidence: 99%

Morphological and Molecular Characterization of Calonectria foliicola Associated with Leaf Blight on Rubber Tree (Hevea brasiliensis) in Thailand

Thaochan

Pornsuriya

Chairin

et al. 2022

JoF

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Leaf blight is commonly observed in rubber trees (Hevea brasiliensis) and can be caused by several fungal species. From October to December 2021, the emergence rubber tree disease was observed in Krabi province, southern Thailand. Small brown to dark brown spots developed on the leaves of rubber trees and later expanded into most parts of the leaves. Fungal isolates were isolated from infected tissues and a total of 15 Calonectria-like isolates were recovered from 10 infected leaf samples. Pathogenicity testing using the agar plug method revealed that four isolates caused leaf blight on rubber tree, similar to the situation in natural infections. Based on morphological study and the molecular properties of internal transcribed spacer (ITS), calmodulin (cal), translation elongation factor 1-α (tef1-α), and β-tubulin 2 (tub2) sequences, the four fungal isolates were identified as Calonectria foliicola. To the best of our knowledge, this is the first report of rubber trees pas a new host for C. foliicola in Thailand and elsewhere. This study reports on an emerging disease affecting rubber trees in Thailand, and the results are of benefit for the development of an appropriate method to manage this emerging disease in Thailand.

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Section: Discussionmentioning

confidence: 99%

Morphological and Molecular Characterization of Calonectria foliicola Associated with Leaf Blight on Rubber Tree (Hevea brasiliensis) in Thailand

Thaochan

Pornsuriya

Chairin

et al. 2022

JoF

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“…India has a net planted area of 3.9 million hectares of Eucalyptus, cerciana (Bose et al, 2020;Mohanan, 2014;Mohanty et al, 2012;Old et al, 2003;Rattan et al, 1983;Sharma et al, 1984;Sharma & Mohanan, 1982).…”

Section: Impact Of Calonectria Leaf Blightmentioning

confidence: 99%

“…colhounii ) and Ca. cerciana (Bose et al, 2020; Mohanan, 2014; Mohanan & Sharma, 1984, 1985; Mohanty et al, 2012; Old et al, 2003; Rattan et al, 1983; Sharma et al, 1984; Sharma & Mohanan, 1982).…”

Section: Introductionmentioning

confidence: 99%

Calonectria leaf blight of Eucalyptus: A global review

Bose

Banerjee

Pandey

et al. 2022

Annals of Applied Biology

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Calonectria (= Cylindrocladium), an internationally recognised fungal ascomycete genus, causes significant diseases on numerous crops of forestry, horticultural and agricultural interest. Eucalyptus, an economically important multipurpose plantation forestry species, is severely threatened by Calonectria leaf blight (CLB) disease in Brazil, Australia, China, Indonesia, Vietnam and India. The disease causes serious mortality in the nurseries/plantations and yield losses due to defoliation. Since the first report of Calonectria in 1867, efforts have been made for the identification and characterisation of this vastly diverse hypocrealean genus. Currently, the genus Calonectria harbours 131 species grouped within 11 species complexes, and broadly categorised into the Prolate and Sphaero‐Naviculate groups. Globally, 35 Calonectria species distributed in seven species complexes cause CLB of Eucalyptus, out of which 29 belong to the Prolate group and five to the Sphaero‐Naviculate group. Likewise, 28 Calonectria species distributed in eight species complexes have been reported in association with infected Eucalyptus tissues and plantation soil, however, their pathogenicity remains to be determined. Given the importance of CLB of Eucalyptus, this review compiles its global impact, shifts in taxonomy and nomenclature of Calonectria, pathogenesis mechanism, defence response of Eucalyptus upon infection and disease management. This study identifies and provides direction to crucial areas of future research on CLB which is severely impacting Eucalyptus plantations globally.

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“…Recently, Crous et al (2019) reported the association of 110 different genera including species with foliar disease symptoms of eucalypts and suggested the need for further investigations on their pathogenicity. Recent surveys conducted in northern India identified Calonectria cerciana (Bose et al, 2020), C. pseudoreteaudii (Bose et al, 2022) and Lasiodiplodia iraniensis (Negi et al, 2023) as emerging threats to Eucalyptus trees.…”

Section: Introductionmentioning

confidence: 99%

“…(2019) reported the association of 110 different genera including species with foliar disease symptoms of eucalypts and suggested the need for further investigations on their pathogenicity. Recent surveys conducted in northern India identified Calonectria cerciana (Bose et al., 2020), C. pseudoreteaudii (Bose et al., 2022) and Lasiodiplodia iraniensis (Negi et al., 2023) as emerging threats to Eucalyptus trees. In December 2022, symptoms of a severe leaf spot and blight disease were observed on Eucalyptus camaldulensis trees in Yamunanagar, Haryana, northern India (N 30°13.981″ E 77°21.304″, 278 m amsl).…”

Section: Introductionmentioning

confidence: 99%

Pseudoplagiostoma eucalypti: An emerging pathogen of Eucalyptus in northern India

Negi,

Ramkrishna,

Meena

et al. 2024

Forest Pathology

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In December 2022, a leaf spot and blight disease was observed in Eucalyptus plantations in northern India. Morphological features coupled with phylogenetic analysis of combined internal transcribed spacer (ITS), translation elongation factor 1‐alpha (tef1) and β‐tubulin (tub2) regions confirmed the association of Pseudoplagiostoma eucalypti with the disease symptoms. The pathogenicity of P. eucalypti was first proved on detached leaves of Eucalyptus camaldulensis and reconfirmed in glasshouse inoculation experiments. Finally, Koch's postulates were fulfilled by re‐isolating the pathogen from the inoculated leaves. This pathogen was first described in 1995 from the leaves of Eucalyptus spp. collected from southern India, and this study confirms its first serious occurrence after more than two decades in northern India. In addition, this is the first report on the polyphasic characterization of P. eucalypti from India.

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First report of Calonectria cerciana causing leaf blight of Eucalyptus in northern India

Cited by 11 publications

References 6 publications

Morphological and Molecular Characterization of Calonectria foliicola Associated with Leaf Blight on Rubber Tree (Hevea brasiliensis) in Thailand

Morphological and Molecular Characterization of Calonectria foliicola Associated with Leaf Blight on Rubber Tree (Hevea brasiliensis) in Thailand

Calonectria leaf blight of Eucalyptus: A global review

Pseudoplagiostoma eucalypti: An emerging pathogen of Eucalyptus in northern India

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