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
jawa完成签到 ,获得积分10
刚刚
能干亦玉发布了新的文献求助10
刚刚
Orange应助guanghuawang采纳,获得10
1秒前
zhou完成签到,获得积分10
1秒前
kuoping完成签到,获得积分0
2秒前
3秒前
chen发布了新的文献求助10
3秒前
lelele发布了新的文献求助10
3秒前
科研通AI5应助Hexagram采纳,获得10
4秒前
4秒前
深情安青应助道松先生采纳,获得10
4秒前
KSDalton完成签到,获得积分10
4秒前
4秒前
tuanzi发布了新的文献求助10
5秒前
6秒前
pcr163应助仿生人采纳,获得100
7秒前
7秒前
xrL完成签到,获得积分10
7秒前
9秒前
HonamC完成签到,获得积分10
9秒前
星辰大海应助肯瑞恩哭哭采纳,获得10
9秒前
高中生完成签到,获得积分10
10秒前
ChrisKim发布了新的文献求助10
10秒前
博士发布了新的文献求助10
10秒前
11秒前
ttttsy完成签到 ,获得积分10
11秒前
11秒前
11秒前
12秒前
13秒前
朱文琛完成签到,获得积分10
14秒前
tuanzi完成签到 ,获得积分20
14秒前
伶俐绮发布了新的文献求助10
14秒前
Ruby发布了新的文献求助10
14秒前
15秒前
15秒前
SciGPT应助小麻花采纳,获得30
15秒前
15秒前
ZZC发布了新的文献求助30
15秒前
依依完成签到 ,获得积分10
16秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
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 3976058
求助须知:如何正确求助?哪些是违规求助? 3520294
关于积分的说明 11202245
捐赠科研通 3256804
什么是DOI,文献DOI怎么找? 1798471
邀请新用户注册赠送积分活动 877610
科研通“疑难数据库(出版商)”最低求助积分说明 806496