| Leaf Functional Traits of Invasive Grasses Conferring High-Cadmium Adaptation Over Natives | |
| Ilyas, Muhammad2; Shah, Sakhawat3; Lai, Ya-Wen; Sher, Jan; Bai, Tao5; Zaman, Fawad; Bibi, Farkhanda6; Koul, Monika7; Wani, Shabir Hussain8; Majrashi, Ali9; Alharby, Hesham F.; Hakeem, Khalid Rehman10,11,12; Wang, Yong-Jian; Rather, Shabir A. | |
| 2022 | |
| Source Publication | FRONTIERS IN PLANT SCIENCE
 |
| ISSN | 1664-462X |
| Volume | 13Issue:xPages:- |
| Abstract | Heavy metal (HM) contamination resulting from industrialization and urbanization during the Anthropocene along with plant invasion can severely threaten the growth and adaptation of local flora. Invasive alien plant species generally exhibit a growth pattern consistent with their functional traits in non-contaminated environments in the introduced range. However, it remains unclear whether invasive alien plants have an advantage over native plants in contaminated environments and whether this growth pattern is dependent on the adaptation of their leaf functional traits. Here, we selected two congeneric pairs of invasive alien and native grasses that naturally co-exist in China and are commonly found growing in contaminated soil. To evaluate the effect of cadmium (Cd) on the structural and physiological leaf traits, we grew all four species in soil contaminated without or with 80 mg/kg Cd. Invasive plants contained significantly higher concentrations of Cd in all three organs (leaf, stem, and root). They displayed a higher transfer factor and bioconcentration factor (BCF) of shoot and root than natives, indicating that invasive species are potential Cd hyperaccumulators. Invasive plants accumulated polyphenol oxidase (PPO) to higher levels than natives and showed similar patterns of leaf structural and physiological traits in response to changes in Cd bioconcentration. The quantifiable leaf structural traits of invasive plants were significantly greater (except for stomatal density and number of dead leaves) than native plants. Leaf physiological traits, chlorophyll content, and flavonoid content were also significantly higher in invasive plants than in natives under Cd stress conditions after 4 weeks, although nitrogen balance index (NBI) showed no significant difference between the two species. Chlorophyll fluorescence parameters decreased, except for the quantum yield of photosystem II (phi PSII) and the proportion of open photosystem II (qP), which increased under Cd stress conditions in both species. However, invasive plants exhibited higher fluorescence parameters than natives under Cd stress, and the decrement observed in invasive plants under Cd stress was greater than that in natives. High Cd adaptation of invasive grasses over natives suggests that invasive plants possess optimal leaf structural and physiological traits, which enable them to adapt to stressful conditions and capture resources more quickly than natives. This study further emphasizes the potential invasion of alien plants in contaminated soil environments within the introduced range. To a certain extent, some non-invasive alien plants might adapt to metalliferous environments and serve as hyperaccumulator candidates in phytoremediation projects in contaminated environments. |
| Keyword | bioconcentration factor cadmium leaf functional traits phytoremediation physiological response |
| Subject Area | Plant Sciences |
| DOI | 10.3389/fpls.2022.869072 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000812160600001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/13171 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Beijing, Peoples R China 2.Huazhong Agr Univ, Coll Hort & Forestry Sci, Hubei Engn Technol Res Ctr Forestry Informat, Wuhan, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Insect Resources Utilizat & Sustainable Pest, Wuhan, Peoples R China 5.Sher, Jan; Rather, Shabir A.] Chinese Acad Sci, Ctr Integrat Conservat, Xishuangbanna Trop Bot Garden, Beijing, Peoples R China 6.Hubei Ecol Polytechn Coll, Wuhan, Peoples R China 7.Chinese Acad Sci, CAS Key Lab Trop Plant Resources & Sustainable Use, Xishuangbanna Trop Bot Garden, Beijing, Peoples R China 8.Univ Delhi, Hansraj Coll, Dept Bot, New Delhi, India 9.Sher e Ekashmir Univ Agr Sci & Technol Kashmir, Mt Res Ctr Field Crops, Ranbir Singh Pura, Jammu And Kashm, India 10.Taif Univ, Coll Sci, Dept Biol, Taif, Saudi Arabia 11.King Abdulaziz Univ, Fac Sci, Dept Biol Sci, Jeddah, Saudi Arabia 12.King Abdulaziz Univ, Princess Dr Najla Bint Saud Al Saud Ctr Excellence, Jeddah, Saudi Arabia 13.Daffodil Int Univ, Dept Publ Hlth, Dhaka, Bangladesh |
| Recommended Citation GB/T 7714 | Ilyas, Muhammad,Shah, Sakhawat,Lai, Ya-Wen,et al. Leaf Functional Traits of Invasive Grasses Conferring High-Cadmium Adaptation Over Natives[J]. FRONTIERS IN PLANT SCIENCE,2022,13(x):-. |
| APA | Ilyas, Muhammad.,Shah, Sakhawat.,Lai, Ya-Wen.,Sher, Jan.,Bai, Tao.,...&Rather, Shabir A..(2022).Leaf Functional Traits of Invasive Grasses Conferring High-Cadmium Adaptation Over Natives.FRONTIERS IN PLANT SCIENCE,13(x),-. |
| MLA | Ilyas, Muhammad,et al."Leaf Functional Traits of Invasive Grasses Conferring High-Cadmium Adaptation Over Natives".FRONTIERS IN PLANT SCIENCE 13.x(2022):-. |
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