Frost-related dieback of willows. Comparison of epiphytically and endophytically isolated bacteria from different Salix clones, with emphasis on ice nucleation activity, pathogenic properties and seasonal variation

Cambours, M.A.; Nejad, P.; Granhall, Ulf; Ramstedt, Mauritz

doi:10.1016/j.biombioe.2004.06.003

Cited by 22 publications

(17 citation statements)

References 32 publications

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“…The gammaproteobacteria have been shown to be the dominant group in phyllosphere populations from many, diverse plant species (9,16,23,39,45,51). In the majority of these studies, the pseudomonads have been the dominant family detected (30 to 55% of the population), with Enterobacteriaceae family members also being strongly represented (10 to 27%) (9,16,45), although in one study on soybean, the Enterobacteriaceae were found to be dominant, at 57% of the population (23).…”

Section: Discussionmentioning

confidence: 99%

“…In the majority of these studies, the pseudomonads have been the dominant family detected (30 to 55% of the population), with Enterobacteriaceae family members also being strongly represented (10 to 27%) (9,16,45), although in one study on soybean, the Enterobacteriaceae were found to be dominant, at 57% of the population (23). Plant surfaces are considered relatively hostile environments for bacterial colonization due to temperature and humidity fluctuations as well as low nutrient availability (25), and significant seasonal changes in population composition have been noted (39).…”

Section: Discussionmentioning

confidence: 99%

“…A total of 24 bacterial genera were identified from the lettuce phyllosphere, based on analysis of 449 useful clones. Chao1 estimates of population richness (9) indicated that more than 85% of estimated genera were present in the clone libraries in each case (Table 3). These estimates were significantly lower (P Ͻ 0.05) for the population from L. serriola US96UC23 than the populations from L. sativa accessions Saladin (line 25) and Iceberg (line 26), indicating lower diversity in the population from the L. serriola accession.…”

Section: Fig 1 Comparison Of Shannon Diversity Indices For T-rflp Dmentioning

confidence: 99%

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Both Leaf Properties and Microbe-Microbe Interactions Influence Within-Species Variation in Bacterial Population Diversity and Structure in the Lettuce ( Lactuca Species) Phyllosphere

Hunter

Hand

Pink

et al. 2010

Appl Environ Microbiol

188

152

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Morphological and chemical differences between plant genera influence phyllosphere microbial populations, but the factors driving within-species variation in phyllosphere populations are poorly understood. Twenty-six lettuce accessions were used to investigate factors controlling within-species variation in phyllosphere bacterial populations. Morphological and physiochemical characteristics of the plants were compared, and bacterial community structure and diversity were investigated using terminal restriction fragment length polymorphism (T-RFLP) profiling and 16S rRNA gene clone libraries. Plant morphology and levels of soluble carbohydrates, calcium, and phenolic compounds (which have long been associated with plant responses to biotic stress) were found to significantly influence bacterial community structure. Clone libraries from three representative accessions were found to be significantly different in terms of both sequence differences and the bacterial genera represented. All three libraries were dominated by Pseudomonas species and the Enterobacteriaceae family. Significant differences in the relative proportions of genera in the Enterobacteriaceae were detected between lettuce accessions. Two such genera (Erwinia and Enterobacter) showed significant variation between the accessions and revealed microbe-microbe interactions. We conclude that both leaf surface properties and microbial interactions are important in determining the structure and diversity of the phyllosphere bacterial community.The phyllosphere (the aerial parts of plants) is known to support large and diverse naturally occurring microbial communities (19, 51), of which bacteria, living both epiphytically and endophytically, are the most numerous and diverse (2,6,44). A range of environmental factors such as temperature, rainfall, wind, and solar radiation have been shown to play an important role in determining patterns of bacterial phyllosphere colonization (19). Much less is known of the role of plant factors in determining the diversity and dynamics of phyllosphere microbial communities. Plant species (20), gross plant morphology, the position and height of leaves (45), and leaf age (16) have all been associated with variation in the size of phyllosphere bacterial populations. Furthermore, various leaf surface features such epidermal cell wall junctions (12) and grooves along the veins, stomata, and the base of trichomes (29) and near hydathodes (32) have all been identified as preferential bacterial attachment sites, resulting in uneven bacterial distribution on leaf surfaces. The microbial population already resident in the phyllosphere is also likely to impact significantly on the ability of incoming organisms to successfully colonize the leaf surface. Variation in such resident populations between different plant species has been attributed to differences in a range of plant physiochemical characteristics, including the water and phosphorus contents of the leaves, levels of phenolic compounds (which may be inhibitory toward many b...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Fig 1 Comparison Of Shannon Diversity Indices For T-rflp Dmentioning

confidence: 99%

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Both Leaf Properties and Microbe-Microbe Interactions Influence Within-Species Variation in Bacterial Population Diversity and Structure in the Lettuce ( Lactuca Species) Phyllosphere

Hunter

Hand

Pink

et al. 2010

Appl Environ Microbiol

188

152

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“…Cambours et al (2005) reported that ice active epiphytes are the most prevalent in the spring. The same phenomenon was observed under Kerman orchard conditions where the population of INA bacteria increased from March to the end of April and steadily decline onwards.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, sensitivity to environmental changes such as light intensity and ambient humidity was more distinguished (O'Brien and Lindow 1988;Cambours et al 2005;Attard et al 2012). Cambours et al (2005) reported that ice active epiphytes are the most prevalent in the spring.…”

Section: Discussionmentioning

confidence: 99%

Ice nucleation active bacteria from pistachio in Kerman Province, Iran

et al. 2018

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Frost damage is one of the major factors threatening pistachio production in southern part of Iran. In the present study, an attempt was made to screen and characterize ice nucleation bacteria associated with frost damage among some predominant epiphytic microflora. A large number of epiphytic bacteria was isolated from different regions in Kerman province. 1200 bacterial isolates were obtained from bud, twig, leaf and green fruit surfaces. Sixty-four strains exhibited ice nucleation activity. Among these, a vast microbial diversity was observed. For preliminary characterization of the isolates, certain key biochemical and pathogenicity tests were performed. The preserved cultures were often checked for ice formation and loss of ice nucleation activity was found in most cultures. Furthermore, factors affecting the increment of ice nucleation activity were studied and the isolates that recovered their ice nucleation activity were selected for sequence analyses of 16SrDNA, rpoD and recA genes, then compared with other isolates in NCBI GenBank using blasts methods. Pseudomonas fragi, P. putida, P. moraviensis, P. virdiflava and Pantoea agglomerans were the major predominant ice nucleation active bacteria established on plant surfaces. This work reports for the first time the presence of two ice nucleation active bacteria, P. fragi and P. moraviensis, on pistachio plants.

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Diversity of Endophytic Bacteria in Forest Trees

Izumi¹

2011

Endophytes of Forest Trees

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Frost-related dieback of willows. Comparison of epiphytically and endophytically isolated bacteria from different Salix clones, with emphasis on ice nucleation activity, pathogenic properties and seasonal variation

Cited by 22 publications

References 32 publications

Both Leaf Properties and Microbe-Microbe Interactions Influence Within-Species Variation in Bacterial Population Diversity and Structure in the Lettuce ( Lactuca Species) Phyllosphere

Both Leaf Properties and Microbe-Microbe Interactions Influence Within-Species Variation in Bacterial Population Diversity and Structure in the Lettuce ( Lactuca Species) Phyllosphere

Ice nucleation active bacteria from pistachio in Kerman Province, Iran

Diversity of Endophytic Bacteria in Forest Trees

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