Comparative pathology ofCylindrocladium clavatumandC. scopariumonEucalyptusspp. and screening ofEucalyptusprovenances for resistance toCylindrocladiumdamping‐off

Blum, Luiz Eduardo Bassay; Dianese, J. C.; Costa, C. L.

doi:10.1080/09670879209371674

Cited by 10 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the most effective measures to control Eucalyptus leaf blight caused by Calonectria species is selecting disease-resistant Eucalyptus genotypes. Eucalyptus genotypes resistant to Eucalyptus leaf blight have been selected in Australia, Brazil, China, India, and South Africa [ 62 , 63 , 64 , 65 , 66 , 67 ].…”

Section: Discussionmentioning

confidence: 99%

Wide Distribution and Intraspecies Diversity in the Pathogenicity of Calonectria in Soil from Eucalyptus Plantations in Southern Guangxi of China

Wu,

Chen

2023

JoF

View full text Add to dashboard Cite

Eucalyptus spp. are extensively cultivated in southern China because of their adaptability and versatile timber production. Calonectria leaf blight caused by Calonectria species is considered a major threat to Eucalyptus trees planted in China. The GuangXi Zhuang Autonomous Region is the provincial region with the largest distribution of Eucalyptus plantations in China. The present study aimed to expound the species diversity and pathogenicity of Calonectria isolates obtained from the soil of Eucalyptus plantations in GuangXi. A total of 188 Calonectria isolates were recovered from the soil located close to Eucalyptus trees, and the isolates were identified based on the DNA sequence comparisons of the four partial regions of the translation elongation factor 1-alpha (tef1), β-tubulin (tub2), calmodulin (cmdA), and histone H3 (his3) genes. The isolates were identified as Calonectria aconidialis (74.5%), C. hongkongensis (21.3%), C. pseudoreteaudii (2.1%), C. kyotensis (1.6%), and C. chinensis (0.5%). The inoculation results indicated that 40 isolates representing five Calonectria species were pathogenic to the three Eucalyptus genotypes. Two inoculated experiments consistently showed that the longest lesions were produced by the isolates of C. aconidialis. Some isolates of C. aconidialis, C. hongkongensis, and C. kyotensis produced significantly longer lesions than the positive controls, but not the isolates of C. pseudoreteaudii or C. chinensis. These results indicated that Calonectria isolated from the soil may pose a threat to Eucalyptus plantations. Some Calonectria isolates of the same species differed significantly in their virulence in the tested Eucalyptus genotypes. The resistance of different Eucalyptus genotypes to Calonectria isolates within the same species was inconsistent. The inoculation results in this study suggested that many Calonectria isolates in each species had different levels of pathogenicity, and many Eucalyptus genotypes need to be tested to select disease-resistant Eucalyptus genetic materials in the future. The results of the present study enhance our knowledge of species diversity and the potential damage caused by Calonectria in the soil of Eucalyptus plantations. Our results also provide new insights into the breeding of disease-resistant Eucalyptus genotypes for controlling Calonectria leaf blight in China in the future.

show abstract

Section: Discussionmentioning

confidence: 99%

Wide Distribution and Intraspecies Diversity in the Pathogenicity of Calonectria in Soil from Eucalyptus Plantations in Southern Guangxi of China

Wu,

Chen

2023

JoF

View full text Add to dashboard Cite

show abstract

“…To Blum et al, 1992;Crous, 2002;Crous et al, 1998a;Crous et al, 2019a;Crous & Wingfield, 1994;El-Gholl et al, 1986;Soares et al, 2019) (Old et al, 2003).…”

Section: Impact Of Calonectria Leaf Blightmentioning

confidence: 99%

“…robigophila and Ca. eucalypticola (Alfenas et al, 2015; Alfenas & Ferreira, 1979; Blum et al, 1992; Crous, 2002; Crous et al, 1998a; Crous et al, 2019a; Crous & Wingfield, 1994; El‐Gholl et al, 1986; Soares et al, 2019). In the rest of Latin America, Ca.…”

Section: Introductionmentioning

confidence: 99%

Calonectria leaf blight of Eucalyptus: A global review

Bose

Banerjee

Pandey

et al. 2022

Annals of Applied Biology

View full text Add to dashboard Cite

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.

show abstract

Diversity and potential impact of Calonectria species in Eucalyptus plantations in Brazil

Alfenas

Lombard

Pereira

et al. 2015

Studies in Mycology

132

View full text Add to dashboard Cite

Species in the genus Calonectria (Hypocreales) represent an important group of plant pathogenic fungi that cause serious losses to plant crops in tropical and subtropical climates. Calonectria leaf blight is currently one of the main impediments to Eucalyptus cultivation in Brazil, and various species of Calonectria have been associated with this disease. Since most previous identifications were solely based on morphological characters, much of the published literature needs to be re-evaluated. The aim of this study was thus to identify and determine the phylogenetic relationships among species that occur in the Eucalyptus growing regions of Brazil by using partial sequences of the β-tubulin, calmodulin, translation elongation factor 1-α and histone H3 gene regions. Based on extensive collections from soil and infected eucalypt leaf samples from plantations, phylogenetic inference revealed the Ca. pteridis complex to be the most common species complex present in Eucalyptus plantations in Brazil. By elucidating taxa in the Ca. pteridis, Ca. cylindrospora and Ca. candelabra species complexes, 20 novel Calonectria species were identified, and a new name in Calonectria provided for Cylindrocladium macrosporum as Ca. pseudopteridis.

show abstract

Comparative pathology ofCylindrocladium clavatumandC. scopariumonEucalyptusspp. and screening ofEucalyptusprovenances for resistance toCylindrocladiumdamping‐off

Cited by 10 publications

References 10 publications

Wide Distribution and Intraspecies Diversity in the Pathogenicity of Calonectria in Soil from Eucalyptus Plantations in Southern Guangxi of China

Wide Distribution and Intraspecies Diversity in the Pathogenicity of Calonectria in Soil from Eucalyptus Plantations in Southern Guangxi of China

Calonectria leaf blight of Eucalyptus: A global review

Diversity and potential impact of Calonectria species in Eucalyptus plantations in Brazil

Contact Info

Product

Resources

About