caa a22 4500 47710942X CHVBK 20180405111604.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF00010455 doi (NATIONALLICENCE)springer-10.1007/BF00010455 Populations of endophytic bacteria which influence host-resistance to Erwinia -induced bacterial soft rot in potato tubers [Elektronische Daten] [A. Sturz, B. Matheson] The ability of endophytic bacteria to influence Erwinia carotovora var. atroseptica (Eca) growth and disease development was examined in potatoes. Bacterial populations isolated from within the tubers of five potato (Solanum tuberosum L.) cultivars (Kennebec, Butte, Green Mountain, Russet Burbank and Sebago) showed antibiosis toward Eca in an in vitro assay. Sebago was host to the highest percentage of bacterial isolates inhibiting Eca growth in vitro (49.5%), followed by Green Mountain (33.3%), Kennebec (29.3%), Russet Burbank (12.9%) and Butte (1.8%). Of these, Curtobacterium luteum was the most common species. Few endophytic bacteria from Butte were inhibitory to Erwinia; all were from Pantoea agglomerans. Significantly higher populations of Erwinia-inhibiting bacteria were recovered from Kennebec (1.89 × 106 cfu fresh weight tuber tissue) as compared to the other cultivars; the lowest populations were recovered from Butte (0.01 × 106 cfu per g fresh weight tuber tissue). Published levels of cultivar disease resistance to blackleg did not correspond to actual bacterial soft rot development (induced by Eca) in an in vivo (tuber) assay. However, bacterial soft rot development was negatively correlated with the density of tuber populations of endophytic bacteria found able to inhibit Eca growth in vitro (R=−0.879, p=0.05). Kluwer Academic Publishers, 1996 blackleg nationallicence endophytic bacteria nationallicence Erwinia nationallicence host-resistance nationallicence soft-rot nationallicence Sturz A. Prince Edward Island Department of Agriculture Fisheries and Forest, P.O. Box 1600, C1A 7N3, Charlottetown, P.E.I., Canada aut Matheson B. Prince Edward Island Department of Agriculture Fisheries and Forest, P.O. Box 1600, C1A 7N3, Charlottetown, P.E.I., Canada aut Plant and Soil Kluwer Academic Publishers; gopher://gopher:wkap.nl 184/2(1996-06-01), 265-271 0032-079X 184:2<265 1996 184 11104 https://doi.org/10.1007/BF00010455 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00010455 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sturz A. Prince Edward Island Department of Agriculture Fisheries and Forest, P.O. Box 1600, C1A 7N3, Charlottetown, P.E.I., Canada aut NATIONALLICENCE 700 1- Matheson B. Prince Edward Island Department of Agriculture Fisheries and Forest, P.O. Box 1600, C1A 7N3, Charlottetown, P.E.I., Canada aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher:wkap.nl/ 184/2(1996-06-01), 265-271 0032-079X 184:2<265 1996 184 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer