Novel weapon-aided plant protection in the underground battlefield.

and , the causative agents of bacterial wilt, ranks as the second most devastating phytopathogens, affecting over 310 plant species and causing substantial economic losses worldwide. and infect plants through the underground root system, where it interacts with both the host and the surrounding microbiota and multiply in the xylem where bacteria cell and its polysaccharide product block the water transportation from root to aboveground. Currently, effective control methods are limited, as resistance genes are unavailable and antibiotics prove ineffective.

Is plant acoustic communication fact or fiction?

In recent years, the idea has flourished that plants emit and perceive sound and could even be capable of exchanging information through the acoustic channel. While research into plant bioacoustics is still in its infancy, with potentially fascinating discoveries awaiting ahead, here we show that the current knowledge is not conclusive. While plants do emit sounds under biotic and abiotic stresses such as drought, these sounds are high-pitched, of low intensity, and propagate only to a short distance.

Population Dynamics of Intestinal Modulate Galleria mellonella Metamorphosis.

Microbes found in the digestive tracts of insects are known to play an important role in their host's behavior. Although Lepidoptera is one of the most varied insect orders, the link between microbial symbiosis and host development is still poorly understood. In particular, little is known about the role of gut bacteria in metamorphosis.

sp. nov., Isolated from the Rhizospheric Soil of , a Plant Native to the Dokdo Islands, Republic of Korea.

KUDC0405 was isolated from the rhizosphere of from the Dokdo Islands. The KUDC0405 strain was Gram-stain-positive, non-spore forming, non-motile, and facultatively anaerobic bacteria. Strain KUDC0405 was a rod-shaped bacterium with size dimensions of 0.

Metabacillus elymi sp. nov., isolated from the Rhizosphere of Elymus tsukushiensis, a plant native to the Dokdo Islands, Republic of Korea.

Dokdo islands in Republic of Korea, is not suited to survive plant because strong wind, low organic content and high salinity. Nevertheless, 64 taxa of plants have a symbiotic relationship with microbe. The Metabacillus elymi KUDC1714 was isolated from the rhizosphere of Elymus tsukushiensis collected from Dokdo Islands.

sp. nov., a novel plant resistance inducer against soft rot disease in tobacco.

A novel Gram-negative, facultatively anaerobic, non-spore-forming and rod-shaped bacterial strain (KUDC3025) was isolated from rhizospheric soil of subsp. collected from the Dokdo Islands, Republic of Korea and bacterial strain MYb239 was isolated from compost from Kiel, Germany. Phylogenetic analysis based on 16S rRNA gene sequences, multilocus genes (, , and ), and whole-genome sequences indicated that both strains belonged to the genus and were most closely related to KCTC 2927.

sp. nov., isolated from the rhizospheric soil of , a plant native to the Dokdo Islands, Republic of Korea.

KUDC8001 was isolated from the rhizosperic soil of in the Dokdo Islands, Republic of Korea. Strain KUDC8001 was Gram-stain-negative, non-motile and rod-shaped. KUDC8001 was catalase- and oxidase-positive.

sp. nov., a novel actinobacterium isolated from rhizospheric soil of the wild plant .

An actinobacterial strain, designated KUDC0627, was isolated from rhizospheric soil that contained on the Dokdo Islands, Republic of Korea. Cells were Gram-stain-positive, facultative anaerobic, non-motile and non-endospore-forming cocci. Results of phylogenetic analysis based on 16S rRNA gene sequences indicated that strain KUDC0627 belongs to the genus and is most closely related to DSM 21800 (98.

sp. nov., isolated from Dokdo Islands soil.

Strain KUDC5002 was isolated from soil sampled on the Dokdo Islands, Republic of Korea. This bacterial strain was Gram stain-positive, non-motile, rod-shaped, capable of growing at 25-37°C and pH 5.0-12.

Bacillus salidurans sp. nov., isolated from salt-accumulated pepper rhizospheric soil.

A Gram-stain-positive, facultatively anaerobic, motile and rod-shaped bacterium, designated KNUC7312, was isolated from salt-accumulated rhizospheric soil in a pepper greenhouse in Miryang city, Republic of Korea. Cell growth of strain KNUC7312 occurred at 10-45 °C (optimum, 30 °C) and pH 7-12 (optimum, pH 7). In addition, this strain was able to tolerate 0-12 % NaCl (w/v) concentration (optimum, 0-1 %).

Exogenous application of phenylacetic acid promotes root hair growth and induces the systemic resistance of tobacco against bacterial soft-rot pathogen Pectobacterium carotovorum subsp. carotovorum.

Phenylacetic acid (PAA) was evaluated for its capability to promote plant growth and induce systemic resistance in tobacco (Nicotianum tabacum L cv. Xanthi) against the bacterial soft rot pathogen Pectobacterium carotovorum subsp. carotovorum (PCC).

Paenibacillus elymi sp. nov., isolated from the rhizosphere of Elymus tsukushiensis, a plant native to the Dokdo Islands, Republic of Korea.

Strain KUDC6143 was isolated from the rhizosphere of Elymus tsukushiensis, a plant native to the Dokdo Islands, Republic of Korea. Cells of this bacterial strain were Gram-positive, endospore-forming, motile and rod-shaped. The strain was capable of growth at a temperature of 25-45 °C and at a pH of 6.

Alleviation of Salt Stress in Pepper ( L.) Plants by Plant Growth-Promoting Rhizobacteria.

In the present study, we demonstrate that the growth of salt-stressed pepper plants is improved by inoculation with plant growth-promoting rhizobacteria (PGPR). Three PGPR strains ( KNUC7074, KNUC7183, and KNUC7586) were isolated from the rhizosphere of pepper plants growing in saline soil, and pepper plants inoculated with these PGPR strains exhibited significantly greater plant height, fresh weight, dry weight, and total chlorophyll content than non-inoculated plants. In addition, salt-stressed pepper plants that were inoculated with KNUC7183 and KNUC7586 possessed significantly different total soluble sugar and proline contents from non-inoculated controls, and the activity of several antioxidant enzymes (ascorbate peroxidase, guaiacol peroxidase, and catalase) was also elevated in PGPR-treated plants under salt stress.

Comparative study of rhizobacterial communities in pepper greenhouses and examination of the effects of salt accumulation under different cropping systems.

This study compared rhizobacterial communities in pepper greenhouses under a paddy-upland (rice-pepper) rotational system (PURS) and a monoculture repeated cropping system (RCS) and examined adverse effects of high salinity on soil properties. The following soil properties were analyzed: electrical conductivity (EC), pH, concentration of four cations (Na, Ca, Mg, and K), total nitrogen, and organic matter content. Rhizobacterial communities were analyzed using culture-based and culture-independent (pyrosequencing) methods.

Paenibacillus dongdonensis sp. nov., isolated from rhizospheric soil of Elymus tsukushiensis.

A Gram-staining-positive, endospore-forming and rod-shaped bacterial strain, designated KUDC0114(T), was isolated from rhizospheric soil of Elymus tsukushiensis from Dongdo Island, one of the largest of the Dokdo Islands, South Korea. The strain displayed optimal growth at 37 °C, pH 8.5 in the absence of NaCl.

A biodegradable, injectable, gel system based on MPEG-b-(PCL-ran-PLLA) diblock copolymers with an adjustable therapeutic window.

In situ-forming gel systems have drawn increasing attention for their potential use in a variety of biomedical applications. Here, we examined an in situ-forming gel system comprised of MPEG-b-PCL and MPEG-b-(PCL-ran-PLLA) diblock copolymers with different PLLA contents (0-10 mol%) in the PCL segment. The crystalline region of the PCL-ran-PLLA segment decreased with increasing PLLA content.