Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/conphys/cox042 |
High tolerance to high-light conditions for the protected species Ariocarpus kotschoubeyanus (Cactaceae) | |
Arroyo-Perez, Erika1; Flores, Joel2; Gonzalez-Salvatierra, Claudia3; Matias-Palafox, Maria L.1; Jimenez-Sierra, Cecilia1 | |
通讯作者 | Flores, Joel |
来源期刊 | CONSERVATION PHYSIOLOGY
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ISSN | 2051-1434 |
出版年 | 2017 |
卷号 | 5 |
英文摘要 | In this study, we found a high tolerance to high-light conditions for the protected cactus Ariocarpus kotschoubeyanus, which could explain why this species does not show preferences to protected sites under nurse plants.We determined the seasonal ecophysiological performance under perennial plants and under high solar radiation for adult individuals from the ’living rock’ cactus Ariocarpus kotschoubeyanus, which occurs equally under nurse plants and in open spaces. We evaluated the effective quantum yield of photosystem II (Phi(PSII)) and the dissipation of thermal energy [non-photochemical quenching (NPQ)] thorough the year. The maximum apparent electron transport rate (ETRmax) and the saturating photosynthetically active photon flux density for PSII (PFDsat) were also determined from rapid light curves. We found that although the Phi(PSII) was higher in shaded sites under potential nurse plants than in exposed sites, all values were close to the optimal value of 0.83. The high Phi(PSII) found for A. kotschoubeyanus plants suggests that they use a great proportion of the absorbed light for photosynthesis, under nurse plants as well as in open spaces. We also found higher NPQ values in exposed sites than in shaded ones but only in Autumn, thus reducing the risk of photoinhibition. In addition, the PFDsat was higher in exposed sites than in shaded ones in Spring, Summer and Autumn, but in Winter there were no differences between treatments. We also found high saturating light levels for ETR (PFDsat higher than 1378 mu mol m(-2) s(-1)) in all seasons but in winter for shaded and non-shaded plants. Our findings indicate that A. kotschoubeyanus plants use a great proportion of the light that they absorb for photosynthesis. This high tolerance to high-light conditions could explain why A. kotschoubeyanus do not show preferences for protected sites under nurse plants. |
英文关键词 | Chihuahuan desert chlorophyll fluorescence endangered species living rock cactus nurse plants stress tolerance |
类型 | Article |
语种 | 英语 |
国家 | Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000405891500001 |
WOS关键词 | CHLOROPHYLL FLUORESCENCE ; NURSE PLANTS ; ENERGY-DISSIPATION ; XANTHOPHYLL CYCLE ; CENTRAL MEXICO ; DESERT PLANTS ; CONSERVATION ; OPUNTIA ; PHOTOINHIBITION ; PHOTOSYNTHESIS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology ; Physiology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198202 |
作者单位 | 1.Univ Autonoma Metropolitana Iztapalapa, Dept Biol, Av San Rafael Atlixco 186, Ciudad De Mexico 09340, Mexico; 2.Inst Potosino Invest Cient & Tecnol, Div Ciencias Ambientales, Camino Presa San Jose 2055,Colonia Lomas 4a Secc, San Luis Potosi 78216, Slp, Mexico; 3.Univ Autonoma San Luis Potosi, Fac Agron & Vet, Carretera San Luis Potosi Km 14-5, San Luis Potosi 78321, Slp, Mexico |
推荐引用方式 GB/T 7714 | Arroyo-Perez, Erika,Flores, Joel,Gonzalez-Salvatierra, Claudia,et al. High tolerance to high-light conditions for the protected species Ariocarpus kotschoubeyanus (Cactaceae)[J],2017,5. |
APA | Arroyo-Perez, Erika,Flores, Joel,Gonzalez-Salvatierra, Claudia,Matias-Palafox, Maria L.,&Jimenez-Sierra, Cecilia.(2017).High tolerance to high-light conditions for the protected species Ariocarpus kotschoubeyanus (Cactaceae).CONSERVATION PHYSIOLOGY,5. |
MLA | Arroyo-Perez, Erika,et al."High tolerance to high-light conditions for the protected species Ariocarpus kotschoubeyanus (Cactaceae)".CONSERVATION PHYSIOLOGY 5(2017). |
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