Periplasmic multilamellar membranous structures in Nicotiana tabacum L. pollen grains treated with Ni~(2+) or Cu~(2+)

Svetlana Polevova; Maria Breygina; Natalie Matveyeva; Igor Yermakov

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Periplasmic multilamellar membranous structures in Nicotiana tabacum L. pollen grains treated with Ni~(2+) or Cu~(2+)

机译：Ni〜（2+）或Cu〜（2+）处理的烟草花粉粒周质膜结构

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Essential trace elements Ni~(2+) and Cu~(2+) can block pollen germination without causing cell death.Mechanisms of this effect remain unclear. Using TEM, we studied the effects of Ni~(2+) or Cu~(2+) treatment on the ultrastructure of the aperture regions in tobacco pollen preparing to germinate in vitro, since in these zones, the main fluxes of water, ions, and metabolites cross the plasmalemma. Neither Ni~(2+) nor Cu~(2+) altered the cytoplasm ultrastructure, but both affected the reorganization of apertural periplasm during pollen activation. Numerous multilamellar membranous structures continuous with the plasma membrane could be seen in hydrated but not yet activated pollen. When the normal activation was completed, the structures disappeared and the plasmalemma became smooth. In the presence of 1 mM Ni~(2+) or 100 μMCu~(2+), these structures preserved its original appearance. It is assumed to be the storage form for the membrane material, which is to provide an initial phase of the pollen tube growth. Ni~(2+) and Cu~(2+) affect the utilization of these membranes, thereby, blocking the pollen germination.

机译：必需的微量元素Ni〜（2+）和Cu〜（2+）可以阻止花粉萌发而不会引起细胞死亡。这种作用机理尚不清楚。使用TEM，我们研究了Ni〜（2+）或Cu〜（2+）处理对准备在体外发芽的烟草花粉中孔区域超微结构的影响，因为在这些区域中，水，离子的主要通量和代谢物穿过质膜。 Ni〜（2+）和Cu〜（2+）均未改变细胞质的超微结构，但都影响了花粉活化过程中小孔周质的重组。在水合但尚未活化的花粉中可以看到许多与质膜连续的多层膜结构。正常激活完成后，结构消失，质膜变得光滑。在1 mM Ni〜（2+）或100μMCu〜（2+）的存在下，这些结构保留了其原始外观。假定是膜材料的储存形式，这将提供花粉管生长的初始阶段。 Ni〜（2+）和Cu〜（2+）影响这些膜的利用率，从而阻止花粉萌发。

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《Protoplasma: An International Journal of Cell Biology》 |2014年第6期|共5页
作者
Svetlana Polevova; Maria Breygina; Natalie Matveyeva; Igor Yermakov;
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正文语种 eng
中图分类细胞形态学;
关键词
TEM; Ultrastructure; Pollen apertures; Nicotiana tabacum; Nickel; Copper;

机译：透射电镜;超微结构;花粉孔;烟草;镍;铜;

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1. Periplasmic multilamellar membranous structures in Nicotiana tabacum L. pollen grains treated with Ni~(2+) or Cu~(2+) [J] . Svetlana Polevova, Maria Breygina, Natalie Matveyeva, Protoplasma: An International Journal of Cell Biology . 2014,第6期

机译：Ni〜（2+）或Cu〜（2+）处理的烟草花粉粒周质膜结构
2. Characterisation of detergent-insoluble membranes in pollen tubes of Nicotiana tabacum (L.) Characterisation of detergent-insoluble membranes in pollen tubes of Nicotiana tabacum (L.) Characterisation of detergent-insoluble membranes in pollen tubes of Nicotiana tabacum (L.) [J] . Patrick Moreau, Lilly Maneta-Peyret, Claudia Landi, Biology Open . 2015,第3期

机译：烟草（L.）的花粉管中不溶性清洁剂膜的表征（L.）烟草（L.）的花粉管中不溶性清洁剂膜的表征
3. Application of a Mild Hydrothermal Approach Containing an in Situ Reduction Step to the Growth of Single Crystals of the Quaternary U(Ⅳ)-Containing Fluorides Na_4MU_6F_(30) (M = Mn~(2+), CO~(2+), Ni~(2+), Cu~(2+), and Zn~(2+)) Crystal Growth, Structures, and Magnetic Properties [J] . Jeongho Yeon, Mark D. Smith, Joshua Tapp, Journal of the American Chemical Society . 2014,第10期

机译：包含原位还原步骤的温和水热法在含U（Ⅳ）的四价氟化物Na_4MU_6F_（30）（M = Mn〜（2+），CO〜（2+），Ni 〜（2 +），Cu〜（2+）和Zn〜（2+））晶体的生长，结构和磁性
4. Effect of the pH on the Recovery of Al~(3+), Co~(2+), Cr~(3+), Cu~(2+), Fe~(3+), Mg~(2+), Mn~(2+), Ni~(2+) and Zn~(2+) by Purolite S950 [C] . Isadora Dias Perez, Monica M. Jimenez Correa, JorgeA.Soares Tenorio, Energy technology 2018: Carbon dioxide management and other technologies . 2018

机译：pH值对Al〜（3 +），Co〜（2 +），Cr〜（3 +），Cu〜（2 +），Fe〜（3 +），Mg〜（2+）， Purolite S950的Mn〜（2 +），Ni〜（2+）和Zn〜（2+）
5. NtCP56 a new cysteine protease in Nicotiana tabacum L. involved in pollen grain development [O] . Xiao-mei Zhang, Ying Wang, Xiao-meng Lv, -1

机译：NtCP56一种烟草中的新半胱氨酸蛋白酶参与花粉粒的发育
6. Separation of Each Metal Ion from a Synthetic Leach Solution of Manganese Nodules with Two Components as (Mn²⁺, Cu²⁺), (Mn²⁺, Fe²⁺), (Fe³⁺, Cu²⁺), and (Ni²⁺, Co²⁺) [O] . Katsuyuki TAKAHASHI, Tatsuaki SEO, Terushisa KUMAZAWA, 1985

机译：将每种金属离子的合成浸出溶液分离有两种组分（Mn 2 + / sop>，Cu 2 + ），（Mn 2 + / sup>，fe 2 + ），（Fe 3 + ，cu 2 + ），（ni 2 + ，CO ^{2 + ）}

Periplasmic multilamellar membranous structures in Nicotiana tabacum L. pollen grains treated with Ni~(2+) or Cu~(2+)

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