除草剂乙草胺胁迫下两种软珊瑚生理响应

doi:10.11978/2022183

Abstract

Abstract:

In this paper, using acetochlor (ACT) as the stress environment, the long-term and short-term stress of Sarcophyton sp. and Sinularia sp. with different concentrations of acetochlor were used to study the stress changes in coral physiological indicators. Studies have shown that the chlorophyll a and zooxanthellae contents of succulent soft corals and brachydactyly soft corals increased first and then decreased after different concentrations of acetochlor stress. Superoxide dismutase (SOD) and Catalase (CAT) activity will continue to increase and then decrease and maintain a low level, Alkaline Phosphatase (AKP) activity will first increase and then gradually decrease, Glutathione S-Transferase (GST) activity increased and maintained at a high level. The symbiotic zooxanthellae diversity of succulent soft corals became lower, while the abundance of symbiotic zooxanthellae of Brachydactyly soft corals became lower. The zooxanthellae with high abundance all belonged to group C, while the abundance of group G of Brachydactyly was increased. The abundance of soft coral Cyanobacteria gradually increased and the abundance of Firmicutes gradually decreased after stress. The above studies showed that acetochlor had great changes in coral physiological indicators after the stress of Sarcophyton sp. and Sinularia sp..

Key words: soft coral, acetochlor, zooxanthellae, Physiological indicators

YU Qiang, DONG Xianxian, LI Changqing, ZHANG Xin, ZHAO Guoli, CHIN Yaoxian, WANG Peizheng. Physiological responses of two soft corals to herbicide acetochlor stress[J].Journal of Tropical Oceanography, 2023, 42(4): 133-145.

Figures/Tables 12

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References 45

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实验类别	Shannon指数	Simpson指数	Ace指数	Chao指数	Coverage指数
S0S0	0.165±0.003	0.945±0.001	7.4±1.38	6.5±0.5	1
S24S0.5	0.347±0.051*	0.867±0.021*	4.5±0.21*	8.5±0.5	1
S24S4	0.488±0.156*	0.798±0.073*	4.6±0.15	7.0±1.0	1
S24S8	0.279±0.031	0.902±0.009	4.0±0.14*	8.5±0.5	1
S72S0.5	0.273±0.024*	0.895±0.008*	3.0±0.95*	6.5±0.5	1
S72S4	0.287±0.005*	0.890±0.001*	3.0±1.13*	6.5±0.5	1
S72S8	0.223±0.025*	0.922±0.012*	7.0±1.07	7.0±0.6	1

实验类别	Shannon指数	Simpson指数	Ace指数	Chao指数	Coverage指数
M0M0	1.042±0.006	0.488±0.009	4.0±0.76	7.0±1.0	1
M24M0.5	1.049±0.025	0.499±0.002	4.5±0.38	8.0±0.2	1
M24M4	1.029±0.008	0.503±0.005	8.0±1.23	8.0±0.1	1
M24M8	0.759±0.292*	0.657±0.155*	9.5±1.5	9.0±1.0*	1
M72M0.5	1.066±0.055	0.498±0.018	4.0±0.28	8.0±0.3	1
M72M4	1.018±0.006	0.506±0.005	4.0±0.09	7.5±0.5	1
M72M8	0.749±0.283*	0.660±0.155*	9.1±0.06*	8.5±0.5*	1

实验类别	Shannon指数	Simpson指数	Ace指数	Chao指数	Coverage指数
M0M0	5.116±0.267	0.019±0.003	743.1±119.5	744.2±121.8	1
M24M0.5	4.257±0.468*	0.079±0.023*	580.0±140.3*	580.6±137.1*	1
M24M4	3.170±0.046*	0.221±0.019*	400.1±26.8*	401.1±29.5*	1
M24M8	3.595±0.541*	0.189±0.078*	763.5±99.5	768.6±64.9	1
M72M0.5	3.932±0.248	0.087±0.001*	519.1±51.0	529.9±45.1	1
M72M4	3.375±0.193*	0.158±0.004*	523.1±45.5	527.4±42.1	1
M72M8	5.023±1.039	0.032±0.004	1065.2±49.7	1075.6±65.4	1

Physiological responses of two soft corals to herbicide acetochlor stress

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