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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >ALTERED MERISTEM PROGRAM 1 promotes growth and biomass accumulation influencing guard cell aperture and photosynthetic efficiency in Arabidopsis
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ALTERED MERISTEM PROGRAM 1 promotes growth and biomass accumulation influencing guard cell aperture and photosynthetic efficiency in Arabidopsis

机译:改变的公司项目1促进影响防护细胞孔径和拟南芥光合效率的生长和生物质累积

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ALTERED MERISTEM PROGRAM 1 (AMP1) encodes a putative glutamate-carboxypeptidase important for plant growth and development. In this study, by comparing the growth of Arabidopsis wild-type, amp1-10 and amp1-13 mutants, and AMP1-GFP/OX2- and AMP1-GFP/OX7-overexpressing seedlings in vitro and in soil, we uncover the role of AMP1 in biomass accumulation in Arabidopsis. AMP1-overexpressing plants had longer primary roots and increased lateral root number and density than the WT, which correlated with improved root, shoot, and total biomass accumulation. AMP1-overexpressing seedlings had an enhanced rate of growth of primary roots, and accordingly, sucrose supplementation restored primary root growth and promoted lateral root formation in amp1 mutants, while reproductive development, fruit size, and seed content were also modified according to disruption or overexpression of AMP1. We further found that AMP1 plays an important role for stomatal development, guard cell functioning, and carbon assimilation. These data help explain the pleiotropic functions of AMP1 in both root and shoot system development, possibly acting in a sugar-dependent manner for regulation of root architecture, biomass accumulation, and seed production.
机译:改变的商品计划1(AMP1)编码推定的谷氨酸 - 羧肽酶对于植物生长和发育很重要。在这项研究中,通过在体外和土壤中比较Arabidopsis野生型,AMP1-10和AMP1-13突变体的生长,以及AMP1-GFP / OX2-和AMP1-GFP / OX7过度抑制幼苗,我们发现了AMP1在拟南芥中的生物质积累。 AMP1-过度抑制植物具有较长的初级根,并且横向根数和密度增加而不是WT,其与改善的根,芽和总生物质积累相关。 AMP1-过度抑制幼苗具有增强的初级根的生长速率,因此,蔗糖补充恢复了初级根生长,并在AMP1突变体中促进了侧面根部,而生殖发育,果实尺寸和种子含量也根据破坏或过度表达进行修饰AMP1。我们进一步发现,AMP1对气孔发育,防护细胞功能和碳同化起着重要作用。这些数据有助于解释在根系和拍摄系统开发中AMP1的热熵功能,可能以贪婪的方式起作用以进行根系结构,生物质积累和种子生产。

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