Plant circadian clock control of Medicago truncatula nodulation via regulation of nodule cysteine-rich peptides.
Plant circadian clock control of Medicago truncatula nodulation via regulation of nodule cysteine-rich peptides.
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DOI：
10.1093/jxb/erab526
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发表时间：
2022-04-05
影响因子：
6.9
通讯作者：
Gifford ML
中科院分区：
文献类型：
--
作者：
Achom M;Roy P;Lagunas B;Picot E;Richards L;Bonyadi-Pour R;Pardal AJ;Baxter L;Richmond BL;Aschauer N;Fletcher EM;Rowson M;Blackwell J;Rich-Griffin C;Mysore KS;Wen J;Ott S;Carré IA;Gifford ML
豆科植物根瘤内的专门多倍体细胞中含有固氮内共生根瘤菌，其代谢活动受到严格调节。通过对蒺藜苜蓿根瘤中转录本随时间的表达分析，我们发现生物钟能够协调控制与固氮相关的代谢和调节过程。这涉及生物钟相关转录因子 LATE ELONGATED HYPOCOTYL (LHY)，lhy 突变体在结瘤中受到影响。根瘤中的节律转录物包括根瘤特异性富含半胱氨酸肽 (NCR) 的子集，其启动子中具有 LHY 结合的保守晚间元件。到目前为止，研究表明 NCR 可以调节类菌分化并控制根瘤菌种群。然而，这些结论来自对这个具有复杂多样化时空表达的非常大的基因家族的一些成员的研究。我们认为，NCR 的节律表达可能对于细菌活动与植物宿主节律的时间协调很重要，以确保最佳共生。根节生物钟涉及根节特异性富含半胱氨酸肽的晚期伸长下胚轴基因的节律表达，协调共生期间的代谢和调节活动波。
Legumes house nitrogen-fixing endosymbiotic rhizobia in specialized polyploid cells within root nodules, which undergo tightly regulated metabolic activity. By carrying out expression analysis of transcripts over time in Medicago truncatula nodules, we found that the circadian clock enables coordinated control of metabolic and regulatory processes linked to nitrogen fixation. This involves the circadian clock-associated transcription factor LATE ELONGATED HYPOCOTYL (LHY), with lhy mutants being affected in nodulation. Rhythmic transcripts in root nodules include a subset of nodule-specific cysteine-rich peptides (NCRs) that have the LHY-bound conserved evening element in their promoters. Until now, studies have suggested that NCRs act to regulate bacteroid differentiation and keep the rhizobial population in check. However, these conclusions came from the study of a few members of this very large gene family that has complex diversified spatio-temporal expression. We suggest that rhythmic expression of NCRs may be important for temporal coordination of bacterial activity with the rhythms of the plant host, in order to ensure optimal symbiosis. A nodule circadian clock involving the gene Late Elongated Hypocotyland rhythmic expression of nodule-specific cysteine-rich peptides coordinates waves of metabolic and regulatory activity during symbiosis.
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影响因子：
56.9
作者：
Harmer, SL;Hogenesch, LB;Kay, SA
通讯作者：
Kay, SA
DOI：
10.1093/bioinformatics/btr064
发表时间：
2011-04-01
期刊：
Bioinformatics (Oxford, England)
影响因子：
--
作者：
Grant CE;Bailey TL;Noble WS
通讯作者：
Noble WS
DOI：
10.1093/bioinformatics/8.3.275
发表时间：
1992-06-01
期刊：
COMPUTER APPLICATIONS IN THE BIOSCIENCES
影响因子：
--
作者：
JONES, DT;TAYLOR, WR;THORNTON, JM
通讯作者：
THORNTON, JM
DOI：
10.1111/tpj.13050
发表时间：
2015-12
期刊：
The Plant journal : for cell and molecular biology
影响因子：
--
作者：
Ingle RA;Stoker C;Stone W;Adams N;Smith R;Grant M;Carré I;Roden LC;Denby KJ
通讯作者：
Denby KJ
影响因子：
3.7
作者：
Bhardwaj V;Meier S;Petersen LN;Ingle RA;Roden LC
通讯作者：
Roden LC