From Chemical Ecology to Agronomy: Cropping Systems in the Humid Northeast

Smith, Donald L.; Costa, Carlos; Ma, Bao–Luo; Madakadze, Casper; Prithiviraj, Balakrishnan; Zhang, F.; Zhou, Xiaomin

doi:10.1300/j144v09n01_06

Cited by 2 publications

(1 citation statement)

References 171 publications

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“…When applied to soybean leaves LCO from B. japonicum caused transient (2Á5 d) increases in photosynthetic rate under growth chamber conditions (Almaraz et al 2007;Khan et al 2008) and increased soybean yield (Â25%) under field conditions (Smith et al 2003;Almaraz et al 2007). While the increase in photosynthetic rate due to the application of bacteria-to-plant signal molecules is new, previous studies have suggested that symbiotic microbes increase plant photosynthetic rates: rhizobia (Maury et al 1993), mycorrhizal fungi (Kucey and Paul 1982), PGPR Bai et al 2003) and bacteria that produce lumichrome (Phillips et al 1999).…”

Section: Industrial Applications and Market Potentialmentioning

confidence: 99%

Microbial signaling and plant growth promotion

2014

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Mabood, F., Zhou, X. and Smith, D. L. 2014. Microbial signaling and plant growth promotion. Can. J. Plant Sci. 94: 1051–1063. The rhizosphere offers a complex microhabitat where root exudates provide a diverse mixture of organic compounds that are used as nutrients or signals by the soil microbial population. On the other hand, these soil microorganisms produce compounds that directly or indirectly assist in plant growth promotion. The widely recognized mechanisms of plant growth promotion are biofertilization, production of phytohormones, suppression of diseases through biocontrol, induction of disease resistance and production of volatile signal compounds. During the past few decades our understanding of the interaction between rhizobacteria and plants has expanded enormously and this has resulted in application of microbial products used as crop inoculants (as biofertilizers), for increased crop biomass and disease suppression. However, this plant–microbe interaction is affected by adverse environmental conditions, and recent work has suggested that inoculants carrying plant-to-bacteria or bacteria-to-plant signals can overcome this and promote plant productivity under stressful environmental conditions. Very recent work has also shown that some plant growth-promoting rhizobacteria secrete novel signaling molecules that also promote plant growth. The use of rhizobacterial signaling in promoting plant growth offers a new window of opportunity, especially when we are looking at plants to provide biofuels and novel bioproducts. Developing technologies that can enhance plant growth and productivity is imperative.

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