The stoichiometry of soil trace elements plays a critical role in
regulating Camellia Oleifera nutrient accumulation and production
Abstract
Understanding the accumulation rule of nutrients is crucial to promote
the production of Camellia Oleifera. The stoichiometry of soil
microelements is more critical than their content in affecting the
growth and yield of plants. However, research on C. Oleifera in
these aspects is limited. In this study, we examined microelement
content in soil and various parts of the C. oleifera plant and
analysed the relationship between the bioaccumulation, distribution, and
production of plant trace elements with the stoichiometry of soil trace
elements. Our findings indicated that high-yield plants transported more
Ca, Mg, and B to the shoot, while low-yield plants stored higher Fe, Zn,
and Al in the root. The significantly lower bioaccumulation factor and
translocation factor of B and Mg in the high-yield plants highlighted
the importance of nutrient storage in promoting C. Oleifera
yield. Multiple regression analysis and the Mantel test demonstrated
that plant yield and bioaccumulation and transportation of trace
elements were more closely correlated with the stoichiometry of trace
elements than their content. The significantly different stoichiometry
of trace elements in soil of different yields revealed that the
stoichiometry of trace elements was more sensitive and reliable in
reflecting the balance in soil nutrients of C. oleifera and
regulating its growth. This study provides a comprehensive understanding
of the balance in soil trace elements and their relationship with the
growth of C. oleifera and highlights the critical role of the
stoichiometry of soil trace elements in promoting high and stable
production of C. Oleifera.