TY  - JOUR
A1  - Berger, Beatrice
A1  - Baldermann, Susanne
A1  - Ruppel, Silke
T1  - The plant growth-promoting bacterium Kosakonia radicincitans improves fruit yield and quality of Solanum lycopersicum
JF  - Journal of the Science of Food and Agriculture
N2  - BACKGROUNDProduction and the quality of tomato fruits have a strong economic relevance. Microorganisms such as the plant growth-promoting bacterium (PGPB) Kosakonia radicincitans (DSM 16656) have been demonstrated to improve shoot and root growth of young tomato plants, but data on yield increase and fruit quality by K. radicincitans are lacking. RESULTSThis study investigated how K. radicincitans affects tomato fruits. After inoculation of tomato seeds with K. radicincitans or a sodium chloride buffer control solution, stalk length, first flowering and the amount of ripened fruits produced by inoculated and non-inoculated plants were monitored over a period of 21 weeks. Inoculation of tomato seeds with K. radicincitans accelerated flowering and ripening of tomato fruits. Sugars, acidity, amino acids, volatile organic compounds and carotenoids in the fruits were also analyzed. CONCLUSIONIt was found that the PGPBK. radicincitans affected the amino acid, sugar and volatile composition of ripened fruits, contributing to a more pleasant-tasting fruit without forfeiting selected quality indicators. (c) 2017 Society of Chemical Industry
KW  - plant growth-promoting bacteria
KW  - Kosakonia radicincitans
KW  - fruit metabolites
KW  - Solanum lycopersicum
Y1  - 2017
U6  - https://doi.org/10.1002/jsfa.8357
SN  - 0022-5142
SN  - 1097-0010
VL  - 97
SP  - 4865
EP  - 4871
PB  - Wiley
CY  - Hoboken
ER  - 
TY  - JOUR
A1  - Errard, Audrey
A1  - Ulrichs, Christian
A1  - Kuehne, Stefan
A1  - Mewis, Inga
A1  - Drungowski, Mario
A1  - Schreiner, Monika
A1  - Baldermann, Susanne
T1  - Single- versus multiple-pest infestation affects differently the Biochemistry of Tomato (Solanum lycopersicum 'Ailsa Craig')
JF  - Journal of agricultural and food chemistry : a publication of the American Chemical Society
N2  - Tomato is susceptible to pest infestations by both spider mites and aphids. The effects of each individual pest on plants are known, whereas multiple-pest infestations have received little interest. We studied the effects of single-versus multiple-pest infestation by Tetranychus urticae and Myzus persicae on tomato biochemistry (Solanum lycopersicum) by combining a metabolomic approach and analyses of carotenoids using UHPLC-ToF-MS and volatiles using GC-MS. Plants responded differently to aphids and mites after 3 weeks of infestation, and a multiple infestation induced a specific metabolite composition in plants. In addition, we showed that volatiles emissions differed between the adaxial and abaxial leaf epidermes and identified compounds emitted particularly in response to a multiple infestation (cyclohexadecane, dodecane, aromadendrene, and beta-elemene). Finally, the carotenoid concentrations in leaves and stems were more affected by multiple than single infestations. Our study highlights and discusses the interplay of biotic stressors within the terpenoid metabolism.
KW  - spider mites
KW  - aphids
KW  - terpenoids
KW  - carotenoids
KW  - plant volatiles
KW  - systemic response
KW  - Solanaceae
KW  - Solanum lycopersicum
Y1  - 2015
U6  - https://doi.org/10.1021/acs.jafc.5b03884
SN  - 0021-8561
SN  - 1520-5118
VL  - 63
IS  - 46
SP  - 10103
EP  - 10111
PB  - American Chemical Society
CY  - Washington
ER  -