绿华岛4种潮间带大型海藻光合活性对升温及光质的响应

doi:10.11978/2024157

热带海洋学报 ›› 2025, Vol. 44 ›› Issue (3): 72-84.doi: 10.11978/2024157CSTR: 32234.14.2024157

绿华岛4种潮间带大型海藻光合活性对升温及光质的响应

区嘉铭¹(), 汪舒涵¹, 赵旭¹^,²^,³^,⁴, 陈健渠¹, 孙佳宁¹, 邹俏¹, 王凯艺¹, 章守宇¹^,²^,³^,⁴, 王凯¹^,²^,³^,⁴()

1.上海海洋大学海洋科学与生态环境学院, 上海 201306
2.南方海洋科学与工程广东省实验室(珠海), 广东珠海 519082
3.上海海洋大学海洋牧场工程技术研究中心, 上海 201306
4.农业农村部海洋牧场建设专家咨询委员会东海区海洋牧场综合工作站, 上海 201306

收稿日期:2024-08-15 修回日期:2024-09-18 出版日期:2025-05-10 发布日期:2025-06-04
通讯作者: 王凯
作者简介:
区嘉铭(2000—), 男, 广东省珠海市人, 硕士研究生, 从事大型海藻生理生态研究。email: m220501210@st.shou.edu.cn
基金资助:
南方海洋科学与工程广东省实验室(珠海)资助项目(SML2023SP237); 国家自然科学基金(41876191); 现代农业产业技术体系专项资金(CARS-50)

Response of photosynthetic activity to temperature rise and light quality of four intertidal macroalgae from Lühua Island, Zhejiang, China

OU Jiaming¹(), WANG Shuhan¹, ZHAO Xu¹^,²^,³^,⁴, CHEN Jianqu¹, SUN Jianing¹, ZOU Qiao¹, WANG Kaiyi¹, ZHANG Shouyu¹^,²^,³^,⁴, WANG Kai¹^,²^,³^,⁴()

1. College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China
2. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
3. Engineering Technology Research Center of Marine Ranching, Shanghai Ocean University, Shanghai 201306, China
4. Marine Ranching Comprehensive Workstation of the East China Sea, Expert Advisory Committee of Marine Ranching Construction, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China

Received:2024-08-15 Revised:2024-09-18 Online:2025-05-10 Published:2025-06-04
Contact: WANG Kai
Supported by:
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)(SML2023SP237); National Natural Science Foundation of China(41876191); China Agriculture Research System(CARS-50)

摘要/Abstract

摘要： 为揭示岛礁潮间带大型海藻对升温的光合响应, 以及它们在不同光质下的光合效率, 并为岛礁海藻场建设与藻种培育提供理论依据, 利用叶绿素荧光和光合放氧技术, 研究了绿华岛潮间带4种大型海藻(孔石莼、舌状蜈蚣藻、鼠尾藻和羊栖菜)对升温(温度分别为15℃、20℃、25℃)和不同光质(白、红、绿、蓝光)的光合响应。结果显示: 升温降低这些海藻光系统Ⅱ (photosystem Ⅱ, PSⅡ)的最大量子产量(F_v/F_m), 但显著提升它们在强光下(900μmol photons·m^-2·s^-1)的有效量子产量[Y(Ⅱ)]、光合修复与损伤速率的比值(r/k)及光化学淬灭(photochemical quenching, qP); 升温显著增大羊栖菜的非光化学淬灭(NPQ), 但显著降低舌状蜈蚣藻的NPQ。与其他海藻相比, 鼠尾藻具有最高的最大相对电子传递速率(rETR_max)、半饱和光强(E_k)、qP和r/k。这些海藻在白、红、绿光下的最大放氧速率(P_max)无显著差异, 但在蓝光下显著降低, 其中孔石莼的降幅最大。研究表明, 不同海藻对升温和光质的光合响应存在较大差异, 短暂升温有助于4种潮间带大型海藻抵御退潮后的强光, 并提高其在强光下的光合活性, 其中鼠尾藻比其他3种海藻展现出更高的光合活性、耐光性和更好的温度适应性。此外, 在红光和绿光下较强的光合效率反映了这些海藻对潮间带浅水环境的良好适应性。

关键词: 大型海藻, 潮间带, 升温, 光质, 光合作用

Abstract:

In order to reveal the photosynthetic response of intertidal macroalgae to temperature rise and their photosynthetic efficiency under different light qualities and provide a theoretical basis for the construction of island seaweed farms and the cultivation of seaweed, we used chlorophyll fluorescence and dissolved oxygen sensors to examine the photosynthetic responses of four macroalgae (Ulva pertusa, Grateloupia livida, Sargassum thunbergii and Sargassum fusiforme) from the intertidal zone of Lühua Island to temperatures (15℃, 20℃, and 25℃) and light quality (white, red, green, and blue). The results showed that temperature rise reduced the maximum quantum yield (F_v/F_m) of Photosystem Ⅱ (PSII), but significantly enhanced the actual quantum yield [Y(Ⅱ)], the ratio of photosynthetic repair to damage rate (r/k) and photochemical quenching (qP) under high light intensity (900 μmol photons·m^-2·s^-1) in these seaweeds. Temperature rise significantly increased the non-photochemical quenching (NPQ) of S. fusiforme, but significantly decreased that of G. livida. Compared to other seaweeds, S. thunbergii exhibited the highest maximum relative electron transfer rate (rETR_max), half-saturated light intensity (E_k), qP and r/k. Under white, red and green light, these seaweeds showed no significant differences in maximum photosynthetic rate (P_max), but their P_max was significantly reduced under blue light, with the greatest decrease observed in U. pertusa. As shown in our study, the photosynthetic responses of different species to temperature rise and light quality varied considerably, and short-term warming helps the four intertidal macroalgae to resist strong light at low tide and improve their photosynthetic activity under strong light. Notably, S. thunbergii showed higher photosynthetic activity and better adaptation to strong light and temperature rise than the other three. Additionally, the high photosynthetic efficiency under red and green light reflects their good adaptation to the shallow-water environment in the intertidal zone.

Key words: macroalgae, intertidal zone, temperature rise, light quality, photosynthesis

中图分类号:

Q945.11

区嘉铭, 汪舒涵, 赵旭, 陈健渠, 孙佳宁, 邹俏, 王凯艺, 章守宇, 王凯. 绿华岛4种潮间带大型海藻光合活性对升温及光质的响应[J]. 热带海洋学报, 2025, 44(3): 72-84.

OU Jiaming, WANG Shuhan, ZHAO Xu, CHEN Jianqu, SUN Jianing, ZOU Qiao, WANG Kaiyi, ZHANG Shouyu, WANG Kai. Response of photosynthetic activity to temperature rise and light quality of four intertidal macroalgae from Lühua Island, Zhejiang, China[J]. Journal of Tropical Oceanography, 2025, 44(3): 72-84.

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参数	温度/℃	孔石莼	舌状蜈蚣藻	鼠尾藻	羊栖菜
F_v/F_m	25	0.73±0.01^b	0.55±0.04^b	0.71±0.01^c	0.67±0.03^b
	20	0.75±0.01^a	0.55±0.02^b	0.72±0.01^b	0.66±0.01^b
	15	0.76±0.01^a	0.60±0.02^a	0.74±0.01^a	0.72±0.02^a
rETR_max/(μmol electron·m^-2·s^-1)	25	46.48±1.93^b	22.21 ± 1.14^a	99.04±2.69^a	66.82±1.53^a
	20	53.82±5.20^a	19.93 ± 1.07^b	85.4±3.25^b	59.64±2.29^b
	15	49.74±1.57^ab	13.98 ± 0.25^c	82.4±1.24^c	59.02±1.33^b
α	25	0.38±0.02^a	0.32 ± 0.02^b	0.34±0.00^b	0.33±0.01^b
	20	0.31±0.00^b	0.34 ± 0.03^a	0.38±0.01^a	0.38±0.01^a
	15	0.38±0.01^a	0.28 ± 0.01^c	0.32±0.00^c	0.30±0.00^c
E_k/(μmol photons·m^-2·s^-1)	25	122.7±8.91^b	69.12±7.36^a	305.85±11.33^a	199.7±6.92^a
	20	172.24±17.47^a	59.05±6.76^a	222.79±12.52^c	158.8±9.86^b
	15	132.73±7.13^b	49.17±1.90^b	245.46±5.31^b	196.67±6.76^a

参数	光质	U. pertusa	G. livida	S. thunbergii	S. fusiforme
P_max/(μmol O₂·g^-1FW·h^-1)	白	250.28±14.77^a	53.89±2.93^a	63.09±4.26^a	32.05±1.28^a
	红	261.64±17.98^a	52.59±2.71^ab	65.87±2.31^a	33.34±1.34^a
	绿	279.00±19.68^a	52.70±3.28^ab	60.71±2.70^a	33.44±1.42^a
	蓝	161.55±8.92^b	46.16±2.64^b	52.49±2.56^b	28.35±1.56^b
α_(P)/[(μmol O₂·g^-1FW·h^-1)/(μmol photons m^-2·s^-1)]	白	5.09±1.02^a	0.99±0.18^a	2.09±0.39^a	1.00±0.16^a
	红	2.64±0.48^b	1.59±0.33^a	1.28±0.15^b	0.56±0.07^b
	绿	2.31±0.40^b	1.55±0.38^a	1.22±0.18^b	0.42±.051^b
	蓝	3.45±0.66^ab	0.96±0.19^a	1.41±0.26^ab	0.52±0.09^b
R_d/(μmol O₂·g^-1FW·h^-1)	—	-24.19±2.00	-3.38±0.46	-12.20±3.85	-4.31±1.16
E_k/(μmol photons m^-2·s^-1)	白	49.21±11.23^b	54.59±11.11^a	30.22±5.05^b	32.06±5.73^b
	红	98.95±21.49^a	33.13±7.56^a	51.65±6.90^a	59.79±8.78^a
	绿	120.90±25.50^a	33.96±9.26^a	49.88±8.53^a	79.03±11.26^a
	蓝	46.84±10.15^b	48.29±10.76^a	37.19±7.71^ab	54.46±11.26^ab
E_c/(μmol photons m^-2·s^-1)	白	5.00±1.00^b	3.53±0.62^a	6.49±1.66^b	4.63±0.74^b
	红	9.60±1.71^a	2.20±0.45^a	10.75±1.24^a	8.28±1.05^a
	绿	10.96±1.85^a	2.25±0.55^a	11.37±1.69^a	10.91±1.30^a
	蓝	7.60±1.44^ab	3.67±0.72^a	10.00±1.83^ab	8.99±1.61^a

绿华岛4种潮间带大型海藻光合活性对升温及光质的响应

Response of photosynthetic activity to temperature rise and light quality of four intertidal macroalgae from Lühua Island, Zhejiang, China

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