First report of Calonectria cerciana causing leaf blight of Eucalyptus in northern India. Issue 1 (1st December 2020)

• Record Type: Journal Article
• Authors: Bose, Ratnaboli; Pandey, Shailesh; Joshi, Pooja; Banerjee, Sabyasachi; Pandey, Amit; Bhandari, Maneesh S.
• Is Part Of: Forest pathology. Volume 51:Issue 1(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-12-01
• Subjects: Calonectria cerciana -- detached leaf assay -- Eucalyptus -- fungal taxonomy -- phylogeny; Trees -- Diseases and pests -- Periodicals; Trees -- Effect of air pollution on -- Periodicals; Forests and forestry -- Environmental aspects -- Periodicals; 634.9
• DOI: 10.1111/efp.12658
• Languages: English
• ISSNs: 1437-4781

Abstract

Abstract: Eucalyptus spp. and their hybrids are frequently cloned and mass planted across farmland tracts and commercial plantations in northern India. It is a viable feeder species to the paper and pulp industries in this region. In 2018 and 2019, during field surveys conducted in northern India, a serious leaf blight disease was frequently observed in E. tereticornis plantations. Isolation from the blighted leaf samples consistently yielded fungal isolates having Calonectria ‐like morphology. Morphological features coupled with sequence analysis of partial β‐tubulin ( TUB2 ) and partial translation elongation factor‐alpha ( TEF1 ) gene regions of two fungal isolates confirmed the species as Ca. cerciana . In detached leaf assays and glasshouse inoculation experiments, both isolates produced symptoms similar to those observed on the naturally infected leaves. Koch's postulates were fulfilled by re‐isolating Ca. cerciana from the inoculated leaves. This work is the first to confirm that Ca. cerciana is associated with a serious leaf blight disease of Eucalyptus in northern India and is an important addition to the taxonomy of Calonectria fungi in India.