Host Genotype and Hypersensitive Reaction Influence Population Levels of Xanthomonas campestris pv. vitians in Lettuce

被引:13
作者
Bull, Carolee T. [1 ]
Gebben, Samantha J. [1 ,2 ]
Goldman, Polly H. [1 ]
Trent, Mark [1 ]
Hayes, Ryan J. [1 ]
机构
[1] ARS, USDA, Crop Improvement & Protect Unit, Salinas, CA 93905 USA
[2] Hartnell Coll, Sci & Math Inst, Salinas, CA 93901 USA
基金
美国国家科学基金会;
关键词
Lactuca sativa; X; hortorum; BACTERIAL LEAF-SPOT; CULTIVAR; LEAVES; COLONIZATION; RESISTANCE; STRAINS; DISEASE;
D O I
10.1094/PHYTO-07-14-0185-R
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Dynamics of population sizes of Xanthomonas campestris pv. vitians inoculated onto or into lettuce leaves were monitored on susceptible and resistant cultivars. In general, population growth was greater for susceptible (Clemente, Salinas 88, Vista Verde) than resistant (Batavia Reine des Glaces, Iceberg, Little Gem) cultivars. When spray-inoculated or infiltrated, population levels of X. campestris pv. vitians were consistently significantly lower on Little Gem than on susceptible cultivars, while differences in the other resistant cultivars were not consistently statistically significant. Populations increased at an intermediate rate on cultivars Iceberg and Batavia Reine des Glaces. There were significant positive correlations between bacterial concentration applied and disease severity for all cultivars, but bacterial titer had a significantly greater influence on disease severity in the susceptible cultivars than in Little Gem and an intermediate influence in Iceberg and Batavia Reine des Glaces. Infiltration of X. campestris pv. vitians strains into leaves of Little Gem resulted in an incompatible reaction, whereas compatible reactions were observed in all other cultivars. It appears that the differences in the relationship between population dynamics for Little Gem and the other cultivars tested were due to the hypersensitive response in cultivar Little Gem. These findings have implications for disease management and lettuce breeding because X. campestris pv. vitians interacts differently with cultivars that differ for resistance mechanisms.
引用
收藏
页码:316 / 324
页数:9
相关论文
共 47 条
[1]   Population dynamics of Xanthomonas campestris pv. vitians on different plant species and management of bacterial leaf spot of lettuce under greenhouse conditions [J].
Al-Saleh, M. A. ;
Ibrahim, Y. E. ;
Abo-Elyousr, K. A. M. ;
Alibrahim, J. S. .
CROP PROTECTION, 2011, 30 (07) :883-887
[2]  
[Anonymous], 2007, The Study of Plant Disease Epidemics
[3]   Role of crop debris and weeds in the epidemiology of bacterial leaf spot of lettuce in California [J].
Barak, JD ;
Koike, ST ;
Gilbertson, RL .
PLANT DISEASE, 2001, 85 (02) :169-178
[4]   Bacterial colonization of leaves: A spectrum of strategies [J].
Beattie, GA ;
Lindow, SE .
PHYTOPATHOLOGY, 1999, 89 (05) :353-359
[5]   THE SECRET LIFE OF FOLIAR BACTERIAL PATHOGENS ON LEAVES [J].
BEATTIE, GA ;
LINDOW, SE .
ANNUAL REVIEW OF PHYTOPATHOLOGY, 1995, 33 :145-172
[6]  
Boesewinkel H. J., 1977, New Zealand Journal of Agriculture, V134, P54
[7]  
Bradbury J. F., 1986, GUIDE PLANT PATHOGEN
[8]   Structure and Functions of the Bacterial Microbiota of Plants [J].
Bulgarelli, Davide ;
Schlaeppi, Klaus ;
Spaepen, Stijn ;
van Themaat, Emiel Ver Loren ;
Schulze-Lefert, Paul .
ANNUAL REVIEW OF PLANT BIOLOGY, VOL 64, 2013, 64 :807-838
[9]  
Bull CT, 2013, PHYTOPATHOLOGY, V103, P21
[10]  
Bull C. T., 2005, Plant Health Progress, P1, DOI 10.1094/PHP-2005-1121-01-RS