Pre-harvest application of 2,6-dichloroisonicotinic acid, β-aminobutyric acid or benzothiadiazole to control post-harvest storage diseases of melons by inducing systemic acquired resistance (SAR)

被引:12
作者
Bokshi, A. I.
Morris, S. C.
McConchie, R. M.
Deverall, B. J.
机构
[1] Sydney Postharvest Lab, N Ryde, NSW 2113, Australia
[2] Univ Sydney, Fac Agr Food & Nat Resources, Sydney, NSW 2006, Australia
关键词
D O I
10.1080/14620316.2006.11512126
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
Field-grown rockmelon plants were treated with beta-aminobutyric acid (BABA), 2,6-dichloroisonicotinic acid (INA), benzothiadiazole (BTH) or water during fruit development and evaluated for increased resistance against plant diseases or post-harvest pathogens. One experiment was conducted at Camden, NSW, Australia (INA, BABA or water). Two experiments were at Griffith, NSW, Australia (INA, BTH or water). Growing plants and harvested fruits were assessed for disease symptoms from natural infections and assayed for the accumulation of chitinase and peroxidase, two major pathogenesis-related (PR) proteins induced as a result of systemic acquired resistance (SAR). Harvested fruit from both BTH- or INA-treated plants showed a significant (P < 0.05) reduction in the severity and incidence of post-harvest storage diseases mainly caused by Fusarium, Alternaria and Rhizopus. However, there were no differences in disease severity and the incidence of rots between using four fortnightly foliar sprays of INA or BTH during flowering and fruit development, or a single spray of BTH, 2 weeks before harvest. Each approach showed an equivalent reduction in storage diseases. Plants treated with BABA showed less resistance against powdery mildew in the field and storage rots from natural inoculum, and lower increases in chitinase and peroxidase activities than those treated with INA. In all trials, an additional post-harvest dip with guazatine [0.05% (w/v)] gave a substantial reduction in melon storage rots. Pre-harvest application of INA or BTH reduced the occurrence of powdery mildew and downy mildew on the leaves. Over the three field-experiments, INA had a small phytotoxic effect causing lesion-like symptoms on leaves and affected plant growth, but not yield, at Camden, when applied during flowering and 2 weeks after flowering. However, INA did not produce any phytotoxic effects in the two experiments at Griffith when applied serially, four times to plants after flowering.
引用
收藏
页码:700 / 706
页数:7
相关论文
共 28 条
[1]   Characterization of muskmelon fruit peroxidases at different developmental stages [J].
Biles, CL ;
Bruton, BD ;
Zhang, JX ;
Russo, V .
BIOLOGIA PLANTARUM, 2000, 43 (03) :373-379
[2]   Effects of benzothiadiazole and acetylsalicylic acid on β-1,3-glucanase activity and disease resistance in potato [J].
Bokshi, AI ;
Morris, SC ;
Deverall, BJ .
PLANT PATHOLOGY, 2003, 52 (01) :22-27
[3]  
BRADFORD MM, 1976, ANAL BIOCHEM, V72, P248, DOI 10.1016/0003-2697(76)90527-3
[4]   Induction of systemic acquired resistance in pepper plants by acibenzolar-S-methyl against bacterial spot disease [J].
Buonaurio, R ;
Scarponi, L ;
Ferrara, M ;
Sidoti, P ;
Bertona, A .
EUROPEAN JOURNAL OF PLANT PATHOLOGY, 2002, 108 (01) :41-49
[5]   BETA-AMINOBUTYRIC ACID INDUCES THE ACCUMULATION OF PATHOGENESIS-RELATED PROTEINS IN TOMATO (LYCOPERSICON-ESCULENTUM L.) PLANTS AND RESISTANCE TO LATE BLIGHT INFECTION CAUSED BY PHYTOPHTHORA-INFESTANS [J].
COHEN, Y ;
NIDERMAN, T ;
MOSINGER, E ;
FLUHR, R .
PLANT PHYSIOLOGY, 1994, 104 (01) :59-66
[6]   Effect of treating soybean with 2,6-dichloroisonicotinic acid (INA) and benzothiadiazole (BTH) on seed yields and the level of disease caused by Sclerotinia sclerotiorum in field and greenhouse studies [J].
Dann, E ;
Diers, B ;
Byrum, J ;
Hammerschmidt, R .
EUROPEAN JOURNAL OF PLANT PATHOLOGY, 1998, 104 (03) :271-278
[7]   EFFECTIVENESS OF SYSTEMIC RESISTANCE IN BEAN AGAINST FOLIAR AND SOILBORNE PATHOGENS AS INDUCED BY BIOLOGICAL AND CHEMICAL MEANS [J].
DANN, EK ;
DEVERALL, BJ .
PLANT PATHOLOGY, 1995, 44 (03) :458-466
[8]   Activation of systemic disease resistance in pea by an avirulent bacterium or a benzothiadiazole, but not by a fungal leaf spot pathogen [J].
Dann, EK ;
Deverall, BJ .
PLANT PATHOLOGY, 2000, 49 (03) :324-332
[9]   Benzothiadiazole, a novel class of inducers of systemic acquired resistance, activates gene expression and disease resistance in wheat [J].
Gorlach, J ;
Volrath, S ;
KnaufBeiter, G ;
Hengy, G ;
Beckhove, U ;
Kogel, KH ;
Oostendorp, M ;
Staub, T ;
Ward, E ;
Kessmann, H ;
Ryals, J .
PLANT CELL, 1996, 8 (04) :629-643
[10]   Inducing resistance: A summary of papers presented at the First International Symposium on Induced Resistance to Plant Diseases, Corfu, May 2000 [J].
Hammerschmidt, R ;
M'etraux, JP ;
van Loon, LC .
EUROPEAN JOURNAL OF PLANT PATHOLOGY, 2001, 107 (01) :1-6