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Yield and cold storage of Trichoderma conidia is influenced by substrate pH and storage temperature
Author(s) -
Steyaert Johanna M.,
Chomic Anastasia,
NietoJacobo Maria,
MendozaMendoza Artemio,
Hay Amanda J.,
Braithwaite Mark,
Stewart Alison
Publication year - 2017
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201600616
Subject(s) - conidium , yield (engineering) , germination , conidiation , agar , substrate (aquarium) , trichoderma , horticulture , strain (injury) , elongation , chemistry , cold storage , botany , food science , biology , materials science , bacteria , biochemistry , mutant , ecology , genetics , anatomy , ultimate tensile strength , gene , metallurgy
In this study we examined the influence of the ambient pH during morphogenesis on conidial yield of Trichoderma sp . “atroviride B” LU132 and T. hamatum LU593 and storage at low temperatures. The ambient pH of the growth media had a dramatic influence on the level of Trichoderma conidiation and this was dependent on the strain and growth media. On malt‐extract agar, LU593 yield decreased with increasing pH (3–6), whereas yield increased with increasing pH for LU132. During solid substrate production the reverse was true for LU132 whereby yield decreased with increasing pH. The germination potential of the conidia decreased significantly over time in cold storage and the rate of decline was a factor of the strain, pH during morphogenesis, growth media, and storage temperature.