Pollen and anther development malfunction in distylous flowers of Palicourea padifolia (Rubiaceae)

杂种优势 迪欧西 雄蕊 生物 花粉 植物 开花 不育 茜草科 栽培
作者
Juan Francisco Ornelas,Judith Márquez‐Guzmán,Mónica Pérez Pacheco
出处
期刊:Botanical sciences [Sociedad Botánica de México, A. C.]
卷期号:98 (4): 554-569 被引量:2
标识
DOI:10.17129/botsci.2608
摘要

Background: Heterostyly is a genetic polymorphism in which flowers differ between individual plants of a species in heights at which stamens and style are reciprocally positioned. In these species, sexual selection theory predicts that different allocation patterns affect the functioning of polymorphism, enabling the evolutionary transition between heterostyly and dioecy. Questions: Because heterostyly can transit into dioecy, does anther/pollen development differ between floral morphs (LS and SS) of P. padifolia ? Is pollen/anther development malfunction associated with one morph more than the other? Study species: Palicourea padifolia (Rubiaceae), a distylous plant. Methods: Tiny floral buds to flowers at anthesis were collected, processed for microphotography, and examined to describe pollen developmental pathways in LS and SS flowers. In addition, we used the TUNEL test to detect programmed cell death. Results: Stages of normal pollen development are fully described and illustrated in LS and SS flowers. Abnormalities due to tapetal degeneration were observed at various developmental stages; at later stages, SS flowers showed more abnormalities than LS flowers. The TUNEL test showed that degeneration was by programmed cell death. Conclusions: Along with previous results of asymmetrical fecundity and pollen transfer of morphs in P . padifolia , our study of pollen development indicates that the SS morph was more prone to lose the male function, though male sterility is far from being complete, which it might be an initial step towards functional dioecy.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
刚刚
纯真冰蝶发布了新的文献求助10
1秒前
1秒前
2秒前
2秒前
星星完成签到,获得积分10
3秒前
小杨完成签到,获得积分10
3秒前
3秒前
OsHTAS发布了新的文献求助10
3秒前
dachuichui完成签到,获得积分10
3秒前
科研通AI5应助zero桥采纳,获得10
4秒前
风柳完成签到,获得积分20
4秒前
HIKUN完成签到,获得积分10
4秒前
5秒前
搜集达人应助神勇的曼文采纳,获得10
5秒前
呜呼啦呼发布了新的文献求助10
5秒前
6秒前
隐形曼青应助贝塔采纳,获得10
6秒前
ewetylgkhlj发布了新的文献求助10
6秒前
dachuichui发布了新的文献求助10
6秒前
大花卷完成签到,获得积分10
6秒前
背后海亦发布了新的文献求助10
7秒前
涨水娃完成签到,获得积分20
7秒前
大模型应助innate采纳,获得10
7秒前
NexusExplorer应助机智翼采纳,获得10
8秒前
北游发布了新的文献求助10
8秒前
思源应助比奇堡采纳,获得10
8秒前
9秒前
哈伊呀发布了新的文献求助30
9秒前
9秒前
涨水娃发布了新的文献求助10
10秒前
10秒前
陈隆发布了新的文献求助10
10秒前
10秒前
Re发布了新的文献求助10
11秒前
11秒前
Adam发布了新的文献求助10
11秒前
Xx完成签到,获得积分10
12秒前
13秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970240
求助须知:如何正确求助?哪些是违规求助? 3514997
关于积分的说明 11176725
捐赠科研通 3250268
什么是DOI,文献DOI怎么找? 1795244
邀请新用户注册赠送积分活动 875725
科研通“疑难数据库(出版商)”最低求助积分说明 805004