Temperature and water stress impacts on growth and production of altertoxin-II by strains of Alternaria tenuissima from Argentinean wheat

被引：10

作者：

Patriarca, A. ^{[1
]}

Medina, A. ^{[2
]}

Pinto, V. Fernandez ^{[1
]}

Magan, N. ^{[2
]}

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Quim Organ, RA-1428 Buenos Aires, DF, Argentina

[2] Cranfield Univ, Cranfield Soil & AgriFood Inst, Applied Mycol, Cranfield MK43 0AL, Beds, England

来源：

WORLD MYCOTOXIN JOURNAL | 2014年 / 7卷 / 03期

关键词：

temperature; water stress; growth; Alternaria; altertoxin II; TENUAZONIC ACID PRODUCTION; MYCOTOXIN PRODUCTION; TOXINS; MYCOBIOTA; GRAINS; ETHER; FIELD;

D O I：

10.3920/WMJ2013.1711

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Alternaria tenuissima is commonly isolated from wheat in Argentina. The objective of this study was to examine the effects of temperature (15-34 degrees C) and water activity (0.98, 0.95 a(w)) on growth and temporal altertoxin II (ALTX-II) production by two strains over 14-21 days on a milled wheat agar. It was shown that growth occurred over the whole temperature range tested and was optimum at 25-30 degrees C and 0.98 a(w) and 30 degrees C at 0.95 a(w) The incubation time did not show any significant effect on ALTX-II accumulation. The optimum conditions for ALTX-II production were 0.98 a(w), and 30 degrees C for both strains. The strains also accumulated significant amounts of this toxin at 34 degrees C. This is the first study to evaluate the ecology of growth and production of ALTX-II by strains of A. tenuissima.

引用

页码：329 / 334

页数：6

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