The origin and evolution of the ALOG proteins, members of a plant-specific transcription factor family, in land plants
The origin and evolution of the ALOG proteins, members of a plant-specific transcription factor family, in land plants
复制标题
陆地植物中植物特异性转录因子家族成员 ALOG 蛋白的起源和进化
DOI：
10.1007/s10265-020-01171-6
复制
发表时间：
2020
影响因子：
2.8
通讯作者：
Kyozuka Junko
中科院分区：
文献类型：
--
作者：
Naramoto Satoshi;Hata Yuki;Kyozuka Junko
拟南芥islsh1和oryzag1 （ALOG）蛋白是调控被子植物生殖生长的植物特异性转录因子家族。尽管ALOG蛋白在植物发育中具有重要作用，但对其在基生陆生植物中的研究很少，其进化过程在很大程度上仍是未知的。在这里，我们研究了ALOG家族蛋白的分子进化。我们发现在绿藻中不存在ALOG蛋白，但在所有被分析的陆生植物以及一些陆生植物的近亲——黄藻中都存在ALOG蛋白。多个序列比对发现ALOG结构域在不同植物谱系中具有高度的序列保守性。系统发育分析还发现了石生植物和苔藓植物中ALOG蛋白的一个独特分支，其中包括两个多形侧器官抑制蛋白（MpLOS1和MpLOS2），其中MpLOS2分支长度较长。与此一致的是，MpLOS1的功能可以被专利藻的salog蛋白替代，而MpLOS2不能取代MpLOS1的分子功能。此外，水稻ALOG蛋白OsTAW1和OsG1不能取代MpLOS1的分子功能，尽管我们之前发现OsG1的功能可以被MpLOS1取代。综上所述，这些发现表明ALOG蛋白在陆地植物进化之前就出现了，并且在陆地植物进化过程中表现出功能的保守和多样化。MpLOS1能够补充水稻ALOG突变体，而反之不能，这一发现也表明在苔藓植物和被子植物中ALOG蛋白存在保守和部分分化的功能。
TheArabidopsisLSH1 andOryzaG1 (ALOG) protein is a family of plant-specific transcription factors that regulate reproductive growth in angiosperms. Despite their importance in plant development, little research has been conducted on ALOG proteins in basal land plants and the processes involved in their evolution remain largely unknown. Here, we studied the molecular evolution of ALOG family proteins. We found that ALOG proteins are absent in green algae but exist in all land plants analyzed as well as in some Charophycean algae, closest relatives of land plants. Multiple sequence alignments identified the high sequence conservation of ALOG domains in divergent plant lineages. Phylogenetic analyses also identified a distinct clade of ALOG protein member of lycophytes and bryophytes, including two ofMarchantia polymorphaLATERAL ORGAN SUPPRESOR (MpLOS1 and MpLOS2) with a long branch length in MpLOS2. Consistent with this, the function of MpLOS1 was replaceable byPhycomitrella patensALOG proteins, whereas MpLOS2 failed to replace the molecular function of MpLOS1. Moreover, the rice ALOG proteins, OsTAW1 and OsG1, were not able to replace the molecular function of MpLOS1 although we previously found that the function of OsG1 was replaceable by MpLOS1. Altogether, these findings suggest that ALOG proteins emerged before the evolution of land plants and that they exhibit functional conservation and diversification during the evolution of land plants. The finding that MpLOS1 is able to complement rice ALOG mutants but not vice versa also suggest the existence of conserved and the partly divergent functions of ALOG proteins in bryophytes and angiosperms.
DOI：
10.1242/dev.144287
发表时间：
2017-04-15
期刊：
Development (Cambridge, England)
影响因子：
--
作者：
Jones VA;Dolan L
通讯作者：
Dolan L
影响因子：
64.5
作者：
Bowman, John L.;Kohchi, Takayuki;Schmutz, Jeremy
通讯作者：
Schmutz, Jeremy