Different Growth Promoting Effects of Endophytic Bacteria on Invasive and Native Clonal Plants

Dai, Zhi‐Cong; Fu, Wei; Wan, Lingyun; Cai, Honghong; Wang, Ning; Qi, Shanshan; Du, Daolin

doi:10.3389/fpls.2016.00706

Cited by 37 publications

(24 citation statements)

References 33 publications

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“…Chen et al (2013) found that invasive Alternanthera philoxeroides was more tolerant to fluctuating water depth than their native, congeneric Alternanthera sessilis in wetland and showed better photosynthetic capacity. Similar results were noted by (Xiao et al, 2010) W. trilobata is native to tropical region of south America (Wang et al, 2012;Weber, Sun, & Li, 2008) and is a clonal evergreen creeping herb which was also found in southern region of China in 1970s on a large scale Dai, Fu, Wan, et al, 2016b;Qi et al, 2014). In China, initially it was introduced as a groundcover species but later it spread rapidly from garden to roadsides and then to the agricultural fields (Song, Chow, Sun, Li, & Peng, 2010;Talukdar & Talukdar, 2013).…”

supporting

confidence: 67%

Fluctuated water depth with high nutrient concentrations promote the invasiveness ofWedelia trilobatain Wetland

Sun

Javed

Abdolzadeh

et al. 2019

Ecology and Evolution

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Invasion by plant species poses a serious threat to native ecosystems and causes considerable losses to economy. Invasive plants develop their monocultures and dominate the invaded ecosystems by excluding the co-occurring native plants. Accordingly, plant invasions alter structure of the native ecosystems in the wetlands. Numerous hypotheses have been projected to explain the success of invasions by the invasive plants (Daehler, 2003). Traits of invasive plant species have been investigated and compared in several studies in Abstract The distribution of invasive and native species in wetlands is determined by hydrological conditions; whereas conditions such as water depth fluctuations, variations in the nutrient concentrations are expected to affect the growth and physiological traits of plants. For the assessment of such effects, we conduct greenhouse experiment with three factors; 1) water depth of 5 cm and 15 cm (static and fluctuated); 2) three levels of nutrient concentrations (i) full-strength Hoagland solution (N1), (ii) ¼-strength Hoagland solution (N2), and (iii) 1 / 8 -strength Hoagland solution (N3); and 3) species, invasive Wedelia trilobata (L.) and its congener, native Wedelia chinensis (Osbeck.) under mono and mixed culture. Water depth of 5 cm combined with any of the nutrient treatments significantly restrained the photosynthesis, intracellular CO 2 concentration and leaf chlorophyll of both W. trilobata and W. chinensis.Increase in the water depth to 15 cm with low-nutrient treatment N3 did not sustain the physiological traits of W. chinensis under mono and mixed planting. A great loss was noted in the growth of W. chinensis at 15 cm static and fluctuated water depth with low-nutrient treatment (N3) and under mixed culture. In addition, water depth fluctuations with both low-and high-nutrient treatments significantly affected the root-shoot ratio, relative growth rate, and interspecific interaction among these two species. W. trilobata benefited more from competitive interaction index (CII) under fluctuated water depth at 15 cm with high nutrients, and the value of CII was clearly positive. Therefore, higher competitive ability may contribute to the invasiveness of W. trilobata in wetlands. K E Y W O R D Scompetitive interaction index, interaction, invasion, invasive species, nutrients, Water depth How to cite this article: Sun J, Javed Q, Azeem A, et al. Fluctuated water depth with high nutrient concentrations promote the invasiveness of Wedelia trilobata in Wetland. Ecol

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supporting

confidence: 67%

Fluctuated water depth with high nutrient concentrations promote the invasiveness ofWedelia trilobatain Wetland

Sun

Javed

Abdolzadeh

et al. 2019

Ecology and Evolution

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“…Moreover, each plant part was immersed and shaken in 1.2% sodium hypochlorite solution (NaClO) for 30 min, and then washed with sterile water three times (2 min per wash). The last sterile water rinse (100 μL) was plated onto Luria-Bertani (LB) agar medium and incubated for 24 h (at 30°C) in order to test the efficacy of disinfection for each plant part surface ( Dai et al, 2016 ).…”

Section: Methodsmentioning

confidence: 99%

Pseudomonas aeruginosa L10: A Hydrocarbon-Degrading, Biosurfactant-Producing, and Plant-Growth-Promoting Endophytic Bacterium Isolated From a Reed (Phragmites australis)

Xu²,

Xie

et al. 2018

Front. Microbiol.

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Bacterial endophytes with the capacity to degrade petroleum hydrocarbons and promote plant growth may facilitate phytoremediation for the removal of petroleum hydrocarbons from contaminated soils. A hydrocarbon-degrading, biosurfactant-producing, and plant-growth-promoting endophytic bacterium, Pseudomonas aeruginosa L10, was isolated from the roots of a reed, Phragmites australis, in the Yellow River Delta, Shandong, China. P. aeruginosa L10 efficiently degraded C10–C26 n-alkanes from diesel oil, as well as common polycyclic aromatic hydrocarbons (PAHs) such as naphthalene, phenanthrene, and pyrene. In addition, P. aeruginosa L10 could produce biosurfactant, which was confirmed by the oil spreading method, and surface tension determination of inocula. Moreover, P. aeruginosa L10 had plant growth-stimulating attributes, including siderophore and indole-3-acetic acid (IAA) release, along with 1-aminocyclopropane-1-carboxylic (ACC) deaminase activity. To explore the mechanisms underlying the phenotypic traits of endophytic P. aeruginosa L10, we sequenced its complete genome. From the genome, we identified genes related to petroleum hydrocarbon degradation, such as putative genes encoding monooxygenase, dioxygenase, alcohol dehydrogenase, and aldehyde dehydrogenase. Genome annotation revealed that P. aeruginosa L10 contained a gene cluster involved in the biosynthesis of rhamnolipids, rhlABRI, which should be responsible for the observed biosurfactant activity. We also identified two clusters of genes involved in the biosynthesis of siderophore (pvcABCD and pchABCDREFG). The genome also harbored tryptophan biosynthetic genes (trpAB, trpDC, trpE, trpF, and trpG) that are responsible for IAA synthesis. Moreover, the genome contained the ACC deaminase gene essential for ACC deaminase activity. This study will facilitate applications of endophytic P. aeruginosa L10 to phytoremediation by advancing the understanding of hydrocarbon degradation, biosurfactant synthesis, and mutualistic interactions between endophytes and host plants.

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“…Sorghum halepense , an invasive plant that thrives on low-nitrogen grasslands, contains endogenous nitrogen-fixing bacteria that improve the availability of soil resources (Rout & Chrzanowski, 2009; Rout et al, 2013). The effects of rhizo- and endophytic bacteria on the invasion of exotic plants are species-specific and vary across environmental conditions (Long, Schmidt & Baldwin, 2008; Rout & Callaway, 2012; Dai et al, 2016). While previous studies have been conducted to investigate fungal diversity in invasive plants (Shipunov et al, 2008; Mei et al, 2014), it is equally important that the bacterial diversity associated with invasive plants is explored to understand the plant–bacteria interactions that occur in the invasion mechanisms of alien plants.…”

Section: Introductionmentioning

confidence: 99%

Diversity analysis of the rhizospheric and endophytic bacterial communities of Senecio vulgaris L. (Asteraceae) in an invasive range

Cheng

Tian

Feng

et al. 2019

PeerJ

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Increasing evidence has confirmed the importance of plant-associated bacteria for plant growth and productivity, and thus it is hypothesized that interactions between bacteria and alien plants might play an important role in plant invasions. However, the diversity of the bacterial communities associated with invasive plants is poorly understood. We therefore investigated the diversity of rhizospheric and endophytic bacteria associated with the invasive annual plant Senecio vulgaris L. (Asteraceae) based on 16S rRNA gene data obtained from 57 samples of four Senecio vulgaris populations in a subtropical mountainous area in central China. Significant differences in diversity were observed between plant compartments. Specifically, the rhizosphere harbored many more bacterial operational taxonomic units and showed higher alpha diversity than the leaf and root endospheres. The relative abundance profiles of the bacterial community composition differed substantially between the compartments and populations, especially at the phylum and family levels. However, the top five phyla (Proteobacteria, Firmicutes, Bacteroidetes, Actinobacteria, and Acidobacteria) accounted for more than 90% of all the bacterial communities. Moreover, similar endophytic communities with a shared core set of bacteria were observed from different Senecio vulgaris populations. Heavy-metal-resistant, phosphate-solubilizing bacteria (Brevundimonas diminuta), nitrogen-fixing bacteria (Rhizobium leguminosarum), and cold-resistant bacteria (Exiguobacterium sibiricum) were present in the endosphere at relatively high abundance. This study, which reveals the structure of bacterial communities and their putative function in invasive Senecio vulgaris plants, is the first step in investigating the role of plant–bacteria interactions in the invasion of this species in China.

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Different Growth Promoting Effects of Endophytic Bacteria on Invasive and Native Clonal Plants

Cited by 37 publications

References 33 publications

Fluctuated water depth with high nutrient concentrations promote the invasiveness ofWedelia trilobatain Wetland

Fluctuated water depth with high nutrient concentrations promote the invasiveness ofWedelia trilobatain Wetland

Pseudomonas aeruginosa L10: A Hydrocarbon-Degrading, Biosurfactant-Producing, and Plant-Growth-Promoting Endophytic Bacterium Isolated From a Reed (Phragmites australis)

Diversity analysis of the rhizospheric and endophytic bacterial communities of Senecio vulgaris L. (Asteraceae) in an invasive range

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