Nitrogen: Give and Take from Phylloplane Microbes

Holland, Mark

doi:10.1002/9780470959404.ch10

Cited by 11 publications

(6 citation statements)

References 88 publications

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“…Several phyllosphere microbial members such as methanol-utilizing Methylobacterium bacteria can produce CKs, a family of plant hormones involved in promoting cell division and elongation, which can trigger the release of methanol during plant cell wall expansion and thereby promote bacterial colonization and plant growth (94,128). Additionally, CK production by phyllosphere microorganisms can stimulate the transportation of nitrogen to aerial plant parts, thereby increasing the biomass of aboveground plant parts (65). Ethylene, a volatile hormone synthesized from ACC, triggers senescence in plants under adverse environmental conditions (69).…”

Section: Growth Promotion and Stress Tolerancementioning

confidence: 99%

Phyllosphere Microbiome

Sohrabi

Paasch

Liber

et al. 2023

Annu. Rev. Plant Biol.

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The aboveground parts of terrestrial plants are colonized by a variety of microbes that collectively constitute the phyllosphere microbiota. Decades of pioneering work using individual phyllosphere microbes, including commensals and pathogens, have provided foundational knowledge about how individual microbes adapt to the phyllosphere environment and their role in providing biological control against pathogens. Recent studies have revealed a more complete repertoire of phyllosphere microbiota across plant taxa and how plants respond to and regulate the level and composition of phyllosphere microbiota. Importantly, the development of several gnotobiotic systems is allowing causative and mechanistic studies to determine the contributions of microbiota to phyllosphere health and productivity. New insights into how the phyllosphere carries out key biological processes, including photosynthesis, biomass accumulation, reproduction, and defense against biotic and abiotic insults, in either the presence or absence of a normal microbiota could unleash novel plant- and microbiota-based technologies to improve agriculturally relevant traits of crop plants. Expected final online publication date for the Annual Review of Plant Biology, Volume 74 is May 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Growth Promotion and Stress Tolerancementioning

confidence: 99%

Phyllosphere Microbiome

Sohrabi

Paasch

Liber

et al. 2023

Annu. Rev. Plant Biol.

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“…As phyllosphere is directly exposed to the atmosphere, an abundance of N 2 -fixing bacteria on phyllosphere is logical (Knief et al 2011;Mwajita et al 2013;Batool et al 2016). The presence of N 2 -fixing bacteria has been reported in surveys of phyllosphere community composition, although the mechanisms involved in transferring the nitrogenous compounds to the host plants are unclear (Delmotte et al 2009;Holland 2011). The positive effect of phyllospheric N 2 -fixing bacteria on N content of plants has been proved by researchers (Abril et al 2005;Fürnkranz et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Role of Dominant Phyllosphere Bacteria with Plant Growth–Promoting Characteristics on Growth and Nutrition of Maize (Zea mays L.)

Abadi

Sepehri

Rahmani³

et al. 2020

J Soil Sci Plant Nutr

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Plant growth-promoting bacteria (PGPB) inhabiting the phyllosphere improve the growth and yield of plants by producing natural growth regulators. The objectives of this study were to identify and characterize the indigenous PGPB of maize phyllosphere and to evaluate their ability to improve growth and nutritional status of maize (Zea mays L.). The bacteria were isolated from phyllosphere of maize in the fields located at different geographical locations and screened for various plant growth-promoting (PGP) traits. The most promising PGPB were identified by 16S rRNA gene sequence analysis. A greenhouse experiment was carried out in a completely randomized design with the foliar application of 15 different bacterial treatments. It was found that members of genera Bacillus, Pseudomonas, Microbacterium, Stenotrophomonas, Enterobacter, Pseudarthrobacter, and Kocuria were the most dominant PGPB in maize phyllosphere. Foliar spray of M. arborescens, B. subtilis + S. maltophilia, S. maltophilia, B. megaterium, and E. hormaechei significantly increased the shoot dry weight by 10.40, 9.53, 8.86, 8.73, and 6.00% compared with the control, respectively. M. arborescens and S. maltophilia isolates with the ability to produce indole-3-acetic acid (IAA) had positive effects on dry weight of the shoot. E. hormaechei showed a marked nitrogenase activity, phosphate solubilization, and IAA production and was the most effective treatment in improving the uptake of most nutrients. The nitrogenase activity and IAA production were generally considered to be the most important PGP traits of the bacteria when applied via foliar spray. Overall, the findings presented in this study indicate that the foliar application of the leaf-colonizing PGPB enhanced the growth and nutritional status of maize.

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“…Phyllospheric microorganisms play crucial roles in plant growth and thus provide ecosystem services like carbon (C) sequestration, nitrogen (N) fixation and bioremediation, thereby enhancing crop yield and improving soil health (Bulgarelli et al 2013). The presence of nitrogen fixing bacteria has been reported in phyllosphere community composition surveys (Delmotte et al 2009;Holland 2011). Under temperate conditions, nitrogen fixation occurs in the interior tissues while in a tropical environment, nitrogen fixation occurs in the phyllosphere because more moisture on the leaf surface allows nirogen fixing bacteria to be active (Furnkranz et al 2008).…”

Section: Phylloplane Microbes Enhance the Productivity Of Cropsmentioning

confidence: 99%

Journal of Plant Protection Research

Goswami,

Goel,

Majumdar

2021

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The phyllosphere refers to the entire aerial habitat of plants while phylloplane describes the entire leaf surface. The phylloplane provides a niche for diversified microbial communities and as such it is an important ecosystem both ecologically and economically. For many years, phylloplane dwellers have been studied as bio protectants and enhancers of growth in host plants. Plants and phylloplane-microbial-interactions result in increased fitness and productivity of agricultural crops. In this study, an attempt was made to compile previous studies in order to better understand the role of phylloplane microbiota in influencing the physiology of flora. We also proposed possible further research to explore molecular aspects of signaling mechanisms established by the phylloplane microbial community with their hosts which impact the latter's physiology.

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Nitrogen: Give and Take from Phylloplane Microbes

Cited by 11 publications

References 88 publications

Phyllosphere Microbiome

Phyllosphere Microbiome

Role of Dominant Phyllosphere Bacteria with Plant Growth–Promoting Characteristics on Growth and Nutrition of Maize (Zea mays L.)

Journal of Plant Protection Research

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