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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Effect of methyl jasmonate on in-vitro pollen germination and tube elongation ofPinus nigra
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Effect of methyl jasmonate on in-vitro pollen germination and tube elongation ofPinus nigra

机译：茉莉酸甲酯对体外花粉萌发和管伸缩的影响

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摘要

The purpose of the main research was to investigate the effects of methyl jasmonate (MeJA) (0.05, 0.25, 0.5, and 2.5 mM) on the pollen germination and tube elongation ofPinus nigra. Total pollen germination rate increased after MeJA treatments while the most enhancement was observed at 0.05-mM MeJA. No germination was observed at 2.5-mM MeJA. Although the unipolar and bipolar germination were observed in all groups, no significant changes were observed in unipolar and bipolar pollen germination rates after MeJA treatments. Tube length increased only at 0.05-mM MeJA. Although branched tubes were observed in all groups, branched tube rate increased only at 0.05-mM MeJA. Although two branched, three branched, and consecutive branched tubes were observed in all groups, the most common branching type was two branched type in all groups. Although anisotropy of actin filaments in the shank and apex of unbranched tubes decreased after MeJA treatments, the most decrease was observed at 0.05-mM MeJA. Also, anisotropy of actin filaments in the shank and in pre-branching region of branched tubes decreased only at 0.25-mM MeJA. Anisotropy of both two apexes of a branched tube changed only at 0.25- and 0.5-mM MeJA. Callose accumulation in the apex of unbranched and branched tubes increased in parallel with the increase in MeJA concentration. However, more callose is accumulated in one apex than the other apex of a branched tube. In conclusion, MeJA affected the actin organization, changed the callose distribution, and altered the pollen tube growth ofPinus nigra.
机译：主要研究的目的是探讨茉莉酸甲酯（MEJA）（0.05,0.25,0.5和2.5 mm）对花粉萌发和管伸长的影响。在MEJA治疗后，花粉萌发率的总萌发率增加，而在0.05毫米MEJA下观察到最大的增强。在2.5毫米Meja下观察到萌发。虽然在所有组中观察到单极和双极发芽，但在MEJA治疗后的单极和双极花粉萌发率中没有观察到显着变化。管长度仅增加0.05毫米Meja。尽管在所有基团中观察到支链管，但支化管速率仅在0.05mm Meja时增加。尽管在所有基团中观察到两个分支，三个支链和连续的支链管，但最常见的分支型在所有基团中是两个分支类型。虽然在MEJA治疗后柄和非支链管顶点的肌动蛋白长丝的各向异性降低，但在0.05mm Meja下观察到最低减少。此外，柄部中的肌动蛋白长丝和支链管的预分支区域的各向异性仅在0.25mm Meja下降。两个两端的两端顶点的各向异性仅在0.25-和0.5mm Meja时变化。随着MEJA浓度的增加，未支链和支链管顶点的愈合累积并行增加。然而，比分支管的另一个顶点累积更多的召唤。总之，Meja影响了actin组织，改变了调用分布，并改变了豆类丛生的花粉管生长。

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