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Spencertoxin and spencer acid, new phytotoxic derivatives of diacrylic acid and dipyridinbutan-1,4-diol produced by Spencermartinsia viticola, a causal agent of grapevine Botryosphaeria dieback in Australia

Authors :
Sandra Savocchia
Pierluigi Reveglia
Antonio Evidente
Marco Masi
Regina Billones-Baaijens
Reveglia, Pierluigi
Savocchia, Sandra
Billones-Baaijens, Regina
Masi, Marco
Evidente, Antonio
Source :
Arabian Journal of Chemistry, Vol 13, Iss 1, Pp 1803-1808 (2020)
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

Spencermartinsia viticola is one of the most widespread Botryosphaeriaceae species isolated from grapevines in South Australia and New South Wales vineyards in Australia. A new phytotoxic dipyridine-butane-1,4-diol and a new diacrylic acid derivatives, here named spencertoxin (1) and spencer acid (2), were isolated from the culture filtrates of S. viticola isolate DAR78870 together with p-hydroxybenzaldehyde (3) and 2-(4-hydroxyphenyl) acetic acid (4). Spencertoxin and spencer acid were characterized as 2,3-di(pyridin-3-yl)butane-1,4-diol and (2Z,2′Z)-3,3′-(carbonylbis(oxy))diacrylic acid, respectively, by spectroscopic methods (essentially NMR and HRESIMS). Spencertoxin (1), p-hydroxybenzaldehyde (3) and 2-(4-hydroxyphenyl) acetic acid (4) showed phytotoxicity when the pure compounds were assayed on grapevine leaves of Vitis lambrusca and Vitis vinifera cv. Shiraz. Keywords: Grapevine, Botryosphaeria dieback, Spencermartinsia viticola, Phytotoxins, Spencertoxin and spencer acid

Details

ISSN :
18785352
Volume :
13
Database :
OpenAIRE
Journal :
Arabian Journal of Chemistry
Accession number :
edsair.doi.dedup.....caac322dcd6e4ae92a40e12ac179bbdf