We employed an Illumina-based high-throughput metagenomics sequencing approach to unveil the rhizosphere and root endosphere microbial community associated with an organically grown Camellia population located at the Experimental Garden for Plantation Crops, Assam (India). The de novo assembled tea root endosphere metagenome contained 24,231 contigs (total 7,771,089 base pairs with an average length of 321 bps), while tea rhizosphere soil metagenome contained 261,965 sequences (total 230,537,174 base pairs, average length 846). The most prominent rhizobacteria belonged to the genera, viz., Bacillus (10.35%), Candidatus Solibacter (6.36%), Burkholderia (5.19%), Pseudomonas (3.9%), Streptomyces (3.52%), and Bradyrhizobium (2.77%), while the root endosphere was dominated by bacterial genera, viz., Serratia (46.64%), Methylobacterium (8.02%), Yersinia (5.97%), Burkholderia (2.05%), etc. The presence of few agronomically important bacterial genera, Bradyrhizobium, Rhizobium (each 0.93%), Sinorhizobium (0.34%), Azorhizobium, and Flavobacterium (0.17% each), was also detected in the root endosphere. KEGG pathway mapping indicated the presence of microbial metabolic pathway genes related to tyrosine metabolism, tryptophan metabolism, glyoxylate, and dicarboxylate metabolism which play important roles in endosphere activities, including survival, growth promotion, and host adaptation. The root endosphere microbiome also contained few important plant growth promoting traits related to phytohormone production, abiotic stress alleviation, mineral solubilization, and plant disease suppression.

我们采用基于 Illumina 的高通量宏基因组学测序方法来揭示与位于阿萨姆邦（印度）种植作物实验园的有机种植的山茶花种群相关的根际和根内圈微生物群落。从头组装的茶根内圈宏基因组包含 24,231 个重叠群（共 7,771,089 个碱基对，平均长度为 321 bp），而茶根际土壤宏基因组包含 261,965 个序列（共 230,537,174 个碱基对，平均长度为 846）。最突出的根瘤菌属于属，即芽孢杆菌属(10.35%)、Candidatus Solibacter (6.36%)、伯克霍尔德氏菌属(5.19%)、假单胞菌属(3.9%)、链霉菌属(3.52%)和缓生根瘤菌(2.77%)，而根内球以细菌属为主，即Serratia (46.64%)、Methylobacterium (8.02%)、Yersinia (5.97%)、Burkholderia (2.05%) 等. 存在少量农艺学上重要的细菌属，慢生根瘤菌、根瘤菌（各 0.93%）、中华根瘤菌（0.34%）、固氮菌和黄杆菌（每个 0.17%），也在根内层中检测到。KEGG 通路图谱表明存在与酪氨酸代谢、色氨酸代谢、乙醛酸和二羧酸代谢相关的微生物代谢通路基因，这些基因在内层活动中发挥重要作用，包括生存、促进生长和宿主适应。根内球微生物组还包含一些与植物激素产生、非生物胁迫缓解、矿物质增溶和植物病害抑制相关的重要植物生长促进特性。