Application of titanium regulates the functional components of photosynthetic apparatus in grafted seedlings of Carya cathayensis Sarg. under shade

Daoliang Yan; Feng Song; Zhen Li; Anket Sharma; Xiaoting Xie; Tingting Wu; Xiaofei Wang; Yi He; Jiabao Chen; Qiaoyu Huang; Lu Zhao; Rongling Wu; Shihui Niu; Huwei Yuan; Bingsong Zheng

doi:10.1016/j.chemosphere.2021.133301

Application of titanium regulates the functional components of photosynthetic apparatus in grafted seedlings of Carya cathayensis Sarg. under shade

Chemosphere. 2022 Mar:290:133301. doi: 10.1016/j.chemosphere.2021.133301. Epub 2021 Dec 13.

Authors

Daoliang Yan¹, Feng Song¹, Zhen Li¹, Anket Sharma², Xiaoting Xie¹, Tingting Wu¹, Xiaofei Wang¹, Yi He¹, Jiabao Chen¹, Qiaoyu Huang¹, Lu Zhao¹, Rongling Wu³, Shihui Niu⁴, Huwei Yuan⁵, Bingsong Zheng⁶

Affiliations

¹ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, China.
² State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; Department of Plant Science and Landscape Architecture, University of Maryland, College Park, 20742, USA.
³ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; Center for Statistical Genetics, Departments of Public Health Sciences and Statistic, Pennsylvania State University, Hershey, PA, 17033, USA; Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China.
⁴ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, PR China.
⁵ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, China. Electronic address: hwyuan@zafu.edu.cn.
⁶ State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China; College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, China. Electronic address: bszheng@zafu.edu.cn.

PMID: 34914960
DOI: 10.1016/j.chemosphere.2021.133301

Abstract

Light acts as a key environmental factor for normal growth and development of plants. Carya cathayensis Sarg. (hickory) faces low light conditions, especially those caused by cloudy or rainy days during the rapid growth period, which has caused adverse effects on its growth. In the current investigation, to alleviate the adverse effects of insufficient light on the cultivation of hickory, anti-hydrolyze stabilized ionic titanium (ASIT) was sprayed on the leaves of the three kinds of grafted seedlings and the non-grafted seedlings of hickory grown under different shade conditions. Results showed that the leaf mass per area and chlorophyll content of grafted hickory seedlings were increased after ASIT application. Rubisco content and photosynthetic rate (P_n) of seedlings grown under shading conditions were positively affected by ASIT treatment, especially on the 45th day of treatment, while the interaction effects of the two parameters between ASIT application and different shade treatments were significant. Titanium accumulation was the highest in roots, followed by leaves, and then in stems, while ASIT had the most significant effects on roots and leaves under 50 ± 5% shade. Severe shading inhibited growth and lead to serious destruction of chloroplast ultrastructure. In addition, the role of ASIT was rootstock-dependent, since ASIT had the weakest mitigation effect on the C/H grafted seedlings. To sum up, the application of ASIT to the grafted seedlings of hickory could improve its ability to resist shade stress.

Keywords: Carya cathayensis Sarg.; Chloroplast ultrastructure; Grafted seedlings; Photosynthesis; Shade; Titanium.

MeSH terms

Carya*
Chlorophyll
Photosynthesis
Plant Leaves
Seedlings*
Titanium

Substances

Chlorophyll
Titanium