New research reveals molecular mechanism that regulates oil accumulation in Tung oil seeds

New research reveals molecular mechanism that regulates oil accumulation in Tung oil seeds

New research reveals the molecular mechanism that regulates oil accumulation in Tung oil seeds New research reveals the molecular mechanism that regulates oil accumulation in Tung oil seeds

Tung oil tree is a world-renowned industrial oil tree species.
The oil extracted from tung oil seeds is rich in tung acid, which gives tung oil the characteristics of heat resistance, acid and alkali resistance, anticorrosion, rust resistance, insulation, and fast drying.
Become an excellent dry vegetable oil, widely used in high-quality environmentally friendly coatings, electronic circuit board production and military industry fields, with great economic value and strategic significance
.

Studying the regulation mechanism of tung oil synthesis from Tung oil seeds has important theoretical guiding significance for the cultivation of high-yielding Tung oil varieties

On the one hand, light can provide energy for the accumulation of plant photosynthetic products, and on the other hand, it can also participate in the regulation of plant growth and development
.

In a poor light environment, in order to extend the branches to a well-lit area, the shade-tolerant plants often sacrifice the normal growth of leaves and roots and other vegetative organs at the expense of redistributing limited plant resources to accelerate the extension of plants.

A study jointly conducted by researchers from Wuhan Botanical Garden of the Chinese Academy of Sciences, Hubei University, and Central South University of Forestry and Technology.
Taking the tung tree as the research object, it was found that the tung tree fruit in a deep shade environment, during the period of rapid oil accumulation, the oil cannot Accumulate normally in seeds
.

Transcriptome analysis confirmed that the failure to accumulate oil normally in a shaded environment is due to genes in the fatty acid de novo synthesis pathway and triacylglyceride synthesis pathway, which cannot be up-regulated as expected during the rapid accumulation of oil

Through in-depth analysis of transcriptome data, the researchers unearthed a transcription factor VfHB21 belonging to the class I homologous domain leucine zipper (HD-ZIP)
.

In a shaded environment, the transcription factor is significantly up-regulated during the rapid accumulation of lipids.

In addition, multiple lipid synthesis pathway gene promoters have HD-ZIP I/II recognition originals
.

These findings indicate that VfHB21 may have the function of inhibiting oil synthesis in a deep shade environment

The above research results revealed the molecular mechanism of the HD-ZIP I family transcription factor VfHB21 in the rapid accumulation period of oil accumulation in Tung oil seeds under the shaded environment
.

This research has important theoretical guiding significance for the molecular genetic improvement of Tung oil, as well as the reasonable dense planting of Tung oil trees and the increase of yield

The study, published in the international academic journal "Journal of Botany" ( at The Plant Journal ) on
.

Research by the National Natural Science Foundation of China Ke Xueyuan funded youth innovation projects of Association

Plant Journal of The of The Plant Journal on

http://doi.
org/10.
1111/tpj.
15540