Conidial production by Botryosphaeriaceae species from grapevine shoot lesions in Marlborough vineyards
| Autor: | E. Eirian Jones, Marlene V. Jaspers, A. Shafi, Hayley J. Ridgway |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine biology Horticulture Botryosphaeriaceae biology.organism_classification Diplodia 01 natural sciences Vineyard Conidium Spore Neofusicoccum australe Neofusicoccum 03 medical and health sciences 030104 developmental biology Insect Science Botany Pycnidium Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | New Zealand Plant Protection. 70:295-300 |
| ISSN: | 1179-352X 1175-9003 |
| DOI: | 10.30843/nzpp.2017.70.63 |
| Popis: | Botryosphaeriaceae species are important pathogens of grapevines so the effect of environmental conditions on sporulation from naturally infected Sauvignon blanc grapevines in two Marlborough vineyards was studied. Shoot lesions characteristic of Botryosphaeriaceae infection were marked on 24 grapevines in each vineyard for observation between September 2014 and April 2015. Pycnidia on the lesions oozed conidia during or soon after rainfall on five occasions at maximum air temperatures of 8.4—19.9˚C and relative humidities of 77—94.7%. Microscopic observation of the ooze showed conidia characteristic of either Neofusicoccum or Diplodia species in 67% and 50% of samples from Vineyard A and B, respectively. Sixty- nine colonies characteristic of Botryosphaeriaeae species were recovered after plating of conidial ooze and identified by DNA analysis as Diplodia mutila (39.1%), Neofusicoccum australe (30.4%), N. parvum (14.5%), N. luteum (5.8%), D. seriata (7.2%) and N. ribis (3.0%). All species have been reported previously as grapevine pathogens in New Zealand. |
| Databáze: | OpenAIRE |
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