相关实验视频

Updated: May 16, 2025

Determination of Self-Incompatibility and Inter-Incompatibility Relationships in Citrus Using Manual Pollination, Microscopy, and S-Genotype Analyses

Determination of Self-Incompatibility and Inter-Incompatibility Relationships in Citrus Using Manual Pollination, Microscopy, and S-Genotype Analyses

Published on: June 30, 2023

基因表达和花粉表现表明,不同交配系统的Solanum物种之间的交配后选择发生了变化

Timothy J Biewer-Heisler¹, Matthew J S Gibson¹, Emily Sornay¹

¹Department of Biology, Indiana University, Bloomington, Indiana USA.

G3 (Bethesda, Md.)

|May 15, 2025

概括

交配系统的转变会影响交配后的前胚性特征. 与超越Solanum pennellii.i.相比,像Solanum lycopersicum这样的自我物种对花粉管生长的基因表达更窄.

科学领域:

植物生殖生物学植物生殖生物学
进化遗传学的进化遗传学
性选择性选择性选择

背景情况:

后交配前性 (PMPZ) 特性对于交配成功至关重要,特别是在具有竞争性性子体的物种中.
了解交配系统的转变如何影响PMPZ特征和特定遗传位置的理解仍然有限.

研究的目的:

调查Solanum lycopersicum和超越Solanum pennellii之间的花粉PMPZ特征和基因表达的差异.
检查点甲基聚酶 (PME) 和它们的抑制剂 (PMEI) 在花粉管生长中的作用.

主要方法:

在S. lycopersicum和S. pennellii.中对特定组织的基因表达 (叶子,花粉,风格) 的比较分析.
在体外和体外花粉管生长速度的测量.
专注于参与花粉管延长的位置,包括PME和PMEI.

主要成果:

对花粉有偏见的基因表达域在自食S. lycopersicum中比在超越S. pennellii.中更窄.
大多数生殖性PME和PMEI在S. lycopersicum中显示出受限制的表达域.
S. pennellii在体内表现出更快的花粉管生长,而S. lycopersicum在体内表现出更快的生长.

结论:

在S. lycopersicum种类中,花粉管发育基因的减少表达与体内花粉表现的减缓有关.
这表明,在自我性物种中,对神秘的雌性选择进行了放松的选择,从而导致调节花粉管生长的样式机制的分配发生了变化.

关键词:

索拉尼姆 (Solanum) 是一种有氧化物.一个神秘的女性选择.基因表达的基因表达方式配对系统的配对系统.花粉管生长速度的增长率.花粉-花粉粉的相互作用在产后交配时,生殖前性质的前性质.选择的选择选择的选择.

更多相关视频

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae

Published on: December 2, 2022

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

相关概念视频

Frequency-dependent Selection

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.

Genetics of Speciation

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.

What is a Species?

What is a Species?

Monohybrid Crosses

Monohybrid Crosses

Dihybrid Crosses

Dihybrid Crosses

Formation of Species

Formation of Species

Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.