期刊
MYCOLOGICAL RESEARCH
卷 110, 期 -, 页码 381-392出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mycres.2006.01.009
关键词
biocontrol; Hydrocrea; Moniliophthora roreri; Theobroma cacao
类别
Trichoderma theobromicola and T. paucisporum spp. nov. are described. Trichoderma theobromicola was isolated as an endophyte from the trunk of a healthy cacao tree (Theobroma cacao, Malvaceae) in Amazonian Peru; it sporulates profusely on common mycological media. Trichoderma paucisporum is represented by two cultures that were obtained in Ecuador from cacao pods partially infected with frosty pod rot, Moniliophthora roreri; it sporulates sporadically and most cultures remain sterile on common media and autoclaved rice. It sporulates more reliably on synthetic low-nutrient agar (SNA) but produces few conidia. Trichoderma theobromicola was reintroduced into cacao seedlings through shoot inoculation and was recovered from stems but not from leaves, indicating that it is an endophytic species. Both produced a volatile/diffusable antibiotic that inhibited development of M. roreri in vitro and on-pod trials. Neither species demonstrated significant direct in vitro mycoparasitic activity against M. roreri. (c) 2006 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
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