TY - JOUR
T1 - Sustained growth promotion in Arabidopsis with long-erm exposure to the beneficial soil bacterium Bacillus subtilis (GB03)
AU - Xie, Xitao
AU - Zhang, Huiming
AU - Paré, Paul W.
PY - 2009
Y1 - 2009
N2 - Volatile emissions from the commercial growth promoting soil bacterium Bacillus subtilis (GB03) are effective in augmenting short-term growth, photosynthetic capacity and salt tolerance in Petri-dish grown Arabidopsis seedlings. In contrast, the impact sustained GB03 volatile exposure on plant growth and development has yet to be examined. Here is provided physical and physiological data establishing that bacterial volatiles induce long-term growth promotion, elevated photosynthetic capacity and iron accumulation, as well as delayed albeit higher seed count compared with water-treated control plants. Plants were grown unrestricted in double Magenta boxes containing solid MS media for up to twelve weeks with GB03 volatiles introduced in separate containers within the chamber so that plant bacterial interactions were only by airborne transmission. These results establish that GB03 volatiles induce sustained beneficial effects on Arabidopsis growth including robust and extended vegetative growth followed by elevated seed set.
AB - Volatile emissions from the commercial growth promoting soil bacterium Bacillus subtilis (GB03) are effective in augmenting short-term growth, photosynthetic capacity and salt tolerance in Petri-dish grown Arabidopsis seedlings. In contrast, the impact sustained GB03 volatile exposure on plant growth and development has yet to be examined. Here is provided physical and physiological data establishing that bacterial volatiles induce long-term growth promotion, elevated photosynthetic capacity and iron accumulation, as well as delayed albeit higher seed count compared with water-treated control plants. Plants were grown unrestricted in double Magenta boxes containing solid MS media for up to twelve weeks with GB03 volatiles introduced in separate containers within the chamber so that plant bacterial interactions were only by airborne transmission. These results establish that GB03 volatiles induce sustained beneficial effects on Arabidopsis growth including robust and extended vegetative growth followed by elevated seed set.
KW - Bacillus subtilis (GB03)
KW - Photosynthetic efficiency
KW - Plant growth promoting rhizobacteria (PGPR)
KW - Seed set
KW - Volatile organic compound (VOCs)
UR - http://www.scopus.com/inward/record.url?scp=70450193223&partnerID=8YFLogxK
U2 - 10.4161/psb.4.10.9709
DO - 10.4161/psb.4.10.9709
M3 - Article
C2 - 19826235
AN - SCOPUS:70450193223
SN - 1559-2316
VL - 4
SP - 948
EP - 953
JO - Plant Signaling and Behavior
JF - Plant Signaling and Behavior
IS - 10
ER -