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首页> 外文期刊>MicrobiologyOpen >Identification of pigmented Serratia marcescens symbiotically associated with Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae)
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Identification of pigmented Serratia marcescens symbiotically associated with Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae)

机译：鉴定与Rerynchophorus ferrugineus Olivier（鞘翅目：Curculionidae）共生的有色粘质沙雷氏菌

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Abstract To characterize red pigment-producing bacteria (RPPB) regularly released during oviposition by red palm weevil (RPW), RPPB were recovered from eggs deposited in apples supplied as substrate for oviposition. The presence of RPPB was also detected from gut, the reproductive apparatus of dissected adult and virgin insects and from pupal cases collected within infested palms. RPPB were also identified all along the tissue of these palms. Analysis of the 16S rDNA, gyrB , rpoB , recA , and groEL sequences assigned RPPB to the species Serratia marcescens . RPPB exhibited an antimicrobial activity assessed by the agar well diffusion method against a number of gram-positive and gram-negative bacteria. In this study, we first report the identification of a red pigment-producing S . marcescens as extracellular symbiont of RPW. Route of transmission, detection within different organs, and a wide spread along the infested palm tissue, suggested S. marcescens is present as extracellular symbiont in different developmental stages of the RPW. Additionally, the antimicrobial activity exhibited versus Bacillus spp., Paenibacillus spp., and Lysinibacillus spp., reported as insect pathogens and potential candidates for biocontrol agents, could ascribe for S. marcescens a potential protective role.
机译：摘要为了表征红掌象甲（RPW）在产卵过程中定期释放的红色色素产生细菌（RPPB），从作为产卵基质的苹果中沉积的卵中回收了RPPB。 RPPB的存在也可以从肠道，成年昆虫和原始昆虫的生殖器以及被感染的手掌中收集到的小cases中检测到。在这些手掌的整个组织中也发现了RPPB。分析16S rDNA，gyrB，rpoB，recA和groEL序列，将RPPB分配给粘质沙雷氏菌。 RPPB通过琼脂井扩散法评估了对多种革兰氏阳性和革兰氏阴性细菌的抗菌活性。在这项研究中，我们首先报告了红色素S的鉴定。 marcescens是RPW的胞外共生体。传播途径，在不同器官中的检测以及在受侵害的棕榈组织中的广泛传播，表明粘液链球菌在RPW的不同发育阶段以细胞外共生体的形式存在。另外，据报道，作为昆虫病原体和生物防治剂的潜在候选物，与芽孢杆菌属，杆状芽孢杆菌属和Lysinibacillus菌属相比，其抗菌活性可能归因于粘菌链霉菌具有潜在的保护作用。

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