Conservation of Male Sterility 2 function during spore and pollen wall development supports an evolutionarily early recruitment of a core component in the sporopollenin biosynthetic pathway.
Conservation of Male Sterility 2 function during spore and pollen wall development supports an evolutionarily early recruitment of a core component in the sporopollenin biosynthetic pathway.
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孢子和花粉壁发育过程中雄性不育2功能的保守支持孢子花粉素生物合成途径中核心成分的进化早期募集。
DOI：
10.1111/nph.13012
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Wallace S
中科院分区：
文献类型：
--
作者：
Wallace S
植物的早期进化需要获得许多关键的适应能力，以克服与陆地生存相关的生理困难。其中之一是坚韧的孢粉质壁，它包围着生殖繁殖体，并提供免受干燥和 UV-B 辐射的保护。所有陆地植物都拥有这样的有壁孢子（或其衍生的同源物，花粉）。我们采用了反向遗传学方法，包括敲除和互补实验，以测试苔藓植物Physcomitrella patens中孢子花粉素相关基因MALE STERILTY 2（这对于拟南芥花粉壁发育至关重要）的功能保守性。拟南芥MS2基因在苔藓孢子体中高度表达，导致孢子具有与拟南芥中观察到的高度缺陷壁相似的孢子。 拟南芥 ms2 突变体，发芽率极其低下。相反，mossMS2基因无法拯救A. 拟南芥ms2表型。这里提出的结果表明，被子植物花粉壁发育所需的生化和发育途径的核心成分在陆地植物进化的早期就被招募了，但在被子植物中观察到的花粉壁复杂性的持续增加伴随着MS2基因功能的分歧。
The early evolution of plants required the acquisition of a number of key adaptations to overcome physiological difficulties associated with survival on land. One of these was a tough sporopollenin wall that enclosed reproductive propagules and provided protection from desiccation and UV‐B radiation. All land plants possess such walled spores (or their derived homologue, pollen).We took a reverse genetics approach, consisting of knock‐out and complementation experiments to test the functional conservation of the sporopollenin‐associated geneMALE STERILTY 2(which is essential for pollen wall development inArabidopsis thaliana) in the bryophytePhyscomitrella patens.Knock‐outs of a putative moss homologue of theA.thaliana MS2gene, which is highly expressed in the moss sporophyte, led to spores with highly defective walls comparable to that observed in theA. thaliana ms2mutant, and extremely compromised germination. Conversely, the mossMS2gene could not rescue theA. thaliana ms2phenotype.The results presented here suggest that a core component of the biochemical and developmental pathway required for angiosperm pollen wall development was recruited early in land plant evolution but the continued increase in pollen wall complexity observed in angiosperms has been accompanied by divergence inMS2gene function.
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影响因子：
7.2
作者：
Schaefer, DG;Zryd, JP
通讯作者：
Zryd, JP
新热带金鱼藻 Phaeomegaceros fimbriatus 的孢子体结构：对系统发育、分类学和性状进化的意义
DOI：
--
发表时间：
2006
期刊：
INTERNATIONAL JOURNAL PLANT SCIENCES
影响因子：
--
作者：
J. Villarreal A.;K. Renzaglia
通讯作者：
K. Renzaglia
影响因子：
4.9
作者：
Ariizumi, Tohru;Kawanabe, Takahiro;Toriyama, Kinya
通讯作者：
Toriyama, Kinya
影响因子：
3.9
作者：
Bezanilla, M;Perroud, PF;Quatrano, RS
通讯作者：
Quatrano, RS
DOI：
10.15298/arctoa.21.03
发表时间：
2012
期刊：
Arctoa, a jornal of bryology
影响因子：
--
作者：
S. Polevova
通讯作者：
S. Polevova