Multi-Omics Analysis Reveals Mechanisms of Strong Phosphorus Adaptation in Tea Plant Roots
文献类型： 外文期刊
作者： Liu, Xiaomei 1 ; Tian, Jing 2 ; Liu, Guodao 3 ; Sun, Lili 2 ;
作者机构： 1.Hainan Univ, Coll Trop Crops, Haikou 570228, Peoples R China
2.Fujian Agr & Forestry Univ, Haixia Inst Sci & Technol, Fuzhou 350002, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Crops Genet Resources, Haikou 570228, Peoples R China
关键词： tea plant; phosphorus; root growth; multi-omics
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 15 期
页码：
收录情况： SCI
摘要： Low phosphorus (P) is a major limiting factor for plant growth in acid soils, which are preferred by tea plants. This study aims to investigate the unique mechanisms of tea plant roots adaptation to low-P conditions. Tea plant roots were harvested for multi-omics analysis after being treated with 0 & mu;mol & BULL;L-1 P (0P) and 250 & mu;mol & BULL;L-1 P (250P) for 30 days. Under 250P conditions, root elongation was significantly inhibited, and the density of lateral roots was dramatically increased. This suggests that 250P may inhibit the elongation of tea plant roots. Moreover, the P concentration in roots was about 4.58 times higher than that under 0P, indicating that 250P may cause P toxicity in tea plant roots. Contrary to common plants, the expression of CsPT1/2 in tea plant roots was significantly increased by four times at 250P, which indicated that tea plant roots suffering from P toxicity might be due to the excessive expression of phosphate uptake-responsible genes under 250P conditions. Additionally, 94.80% of P-containing metabolites accumulated due to 250P stimulation, most of which were energy-associated metabolites, including lipids, nucleotides, and sugars. Especially the ratio of AMP/ATP and the expression of energy sensor CsSnRKs were inhibited by P application. Therefore, under 250P conditions, P over-accumulation due to the excessive expression of CsPT1/2 may inhibit energy metabolism and thus the growth of tea plant roots.
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