A preliminary study on life history of Erythrotrichia bohanensis (Erythropeltales, Rhodophyta)

IF 4.5 2区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Yue Chu , Lanping Ding , Yanguang Zhong , Zhimiao Wang , Yuan Gao , Meina Chen , Chang Sun , Bingxin Huang
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引用次数: 0

Abstract

Erythrotrichia bohanensis Huang, Chu et Ding is a recently reported new species, with the type specimen originating from Qinhuangdao, China. Being a lower filamentous red alga, it lives an epiphytic life. In this study, E. bohanensis was isolated from red and brown macroalgae collected in Qinhuangdao, Hebei, in spring 2023. They were cultured under laboratory conditions, and their life cycle was an alternation of sporophyte and gametophyte generations. Thalli are monoecious, with mature gametophytes producing carpogonia and spermatangia. Spermatangia release spermatia through “post-maturation” (maturation after detachment from the thallus) and “over-maturation” (maturation within the thallus). Fertilization occurs between sperms and ova outside the thallus or on the thallus surface, and the zygote germinates to form the sporophyte. Mature sporophytes release monospores, which germinate into gametophytes outside the thallus. This study first reports the life cycle of the new species E. bohanensis, supplementing the sexual reproductive structures and early life history pathways of the genus Erythrotrichia. It also enriches understanding of the diverse reproductive strategies and life history processes that characterize the adaptive capabilities of lower marine red algae to their environments.
博汉红赤藓菌生活史的初步研究
bohanerythrotrichia Huang, Chu et Ding是最近报道的一个新种,其模式标本来自中国秦皇岛。它是一种较低级的丝状红藻,过着附生的生活。本研究从2023年春季在河北秦皇岛采集的红藻和褐藻中分离得到bohane . ensis。它们在实验室条件下培养,其生命周期是孢子体和配子体世代交替。菌体是雌雄同株的,成熟的配子体产生子房和精管。精管通过“后成熟”(脱离囊体后成熟)和“过成熟”(囊体内成熟)释放精子。精子和卵子在试管外或试管表面受精,受精卵萌发形成孢子体。成熟的孢子体释放单孢子,单孢子在菌体外萌发成配子体。本研究首次报道了bohanensis新种的生命周期,补充了红毛虫属的有性生殖结构和早期生活史途径。它还丰富了对低等海洋红藻对环境适应能力的多样化生殖策略和生活史过程的理解。
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来源期刊
Algal Research-Biomass Biofuels and Bioproducts
Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-
CiteScore
9.40
自引率
7.80%
发文量
332
期刊介绍: Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment
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