DOI: 10.1016/j.aquabot.2020.103210
论文题名: Comparative time-courses of photoacclimation by Hawaiian native and invasive species of Gracilaria (Rhodophyta)
作者: Hamel K. ; Smith C.M.
刊名: Aquatic Botany
ISSN: 3043770
出版年: 2020
卷: 163 语种: 英语
英文关键词: Coral reef macroalgae
; Gracilaria coronopifolia
; Gracilaria Salicornia
; Invasive species trait
; Photoacclimation
Scopus关键词: acclimation
; coastal water
; comparative study
; coral reef
; coralline alga
; ecophysiology
; invasive species
; irradiance
; macroalga
; photon flux density
; photoperiod
; red alga
; Anthozoa
; Gracilaria
; Gracilaria coronopifolia
; Gracilaria salicornia
; Rhodophyta
英文摘要: Invasive seaweeds have rapidly increased in global distribution and abundance in recent years, presenting significant threats to nearshore ecosystems. Developing characteristics diagnostic of potential macroalgal invasiveness is an important step in controlling their spread. Studies have identified photoacclimation, the ability of the photosynthetic apparatus to adjust to changes in light, as one important attribute in the success of several invasive terrestrial and marine plants; several studies indicate that the rate of photoacclimation plays a role in the differential success of invasive plants at the expense of natives. In this experiment, we compare two closely related species that occur in Hawaiian coastal waters with similar distribution, habitat, and morphology, the invasive Gracilariasalicornia, and the native G. coronopifolia. Samples were grown in outdoor culture, acclimated to one of two irradiance regimes, and reciprocally transplanted. Photoacclimation rates were assessed using in vivo spectrophotometry and PAM fluorometry. Results indicate that G. salicornia has remarkable tolerance to irradiance extremes and experiences rapid growth when transplanted from low to high photosynthetic photon flux density environments, and that differential rates of overall photoacclimation are insufficient to explain the relative success of these two plants. Photoacclimation is achieved via several complex processes that do not necessarily occur contemporaneously. Future researchers should be wary of assuming its completion based on single indicators. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158616
Appears in Collections: 气候变化与战略
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作者单位: Department of Botany, University of Hawai‘i at Mānoa, 3190 Maile Way, Honolulu, HI 96822, United States
Recommended Citation:
Hamel K.,Smith C.M.. Comparative time-courses of photoacclimation by Hawaiian native and invasive species of Gracilaria (Rhodophyta)[J]. Aquatic Botany,2020-01-01,163