Gene Details:

• Gene ID: Solyc03g118770
• Gene Symbol: SlLAM1
• Gene Name: shoot apical meristem1
• Genome: Tomato Genome version SL4.0
• Species: Solanum lycopersicum

Functional Descriptions:

• Obtained and analyzed mutants of the WUSCHEL-RELATED HOMEOBOX (WOX) family gene SlLAM1 from tomato, whose orthologs in tobacco (Nicotiana sylvestris) and other species are indispensable for blade expansion.
• SlLAM1 mutants cause a delay of leaflet initiation and slightly alter the arrangement of first-order leaflets, whereas the overall leaflet number is comparable to that of wild-type leaves.
• SlLAM1 is also required for floral organ growth and affects the fertility of gametophytes.
• We show that SlLAM1 is also required for floral organ growth and affects the fertility of gametophytes. Our data suggest that SlLAM1 promotes blade expansion in multiple leaf types, and leaflet initiation can be largely uncoupled from blade expansion during compound leaf morphogenesis.
• SlLAM1 promotes blade expansion in multiple leaf types, and leaflet initiation can be largely uncoupled from blade expansion during compound leaf morphogenesis.
• The loss-of-function mutant of SlLAM1 displayed fewer and much smaller secondary leaflets, and also had defects in the outgrowth of the mediolateral axis of leaves and flowers, indicating that SlLAM1 is involved in secondary leaflet initiation in the Solanaceae in addition to the conserved function in promoting lateral organ expansion.

Function-related keywords:

• leaf ,  growth ,  fertility ,  floral ,  floral-organ ,  floral-organ-number ,  homeobox-gene

Literature:

• Leaflet initiation and blade expansion are separable in compound leaf development.   DOI:  10.1111/tpj.14982 ;  PMID:  32889762
• The WOX family transcriptional regulator SlLAM1 controls compound leaf and floral organ development in Solanum lycopersicum.   DOI:  10.1093/jxb/eraa574 ;  PMID:  33277994

Related News:

• The Plant Journal |焦雨铃研究组在复叶形态建成研究中取得新进展

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: