Microstructural and lignin characteristics in herbaceous peony cultivars with different stem strengths

草本植物 栽培 木质部 木质素 维管束 白芍 肉桂醇脱氢酶 植物 化学 细胞壁 次生细胞壁 园艺 生物 生物化学 医学 病理 替代医学 生物合成
作者
Daqiu Zhao,Wenbo Shi,Xing Xia,Yuhan Tang,Jun Tao
出处
期刊:Postharvest Biology and Technology [Elsevier BV]
卷期号:159: 111043-111043 被引量:30
标识
DOI:10.1016/j.postharvbio.2019.111043
摘要

Abstract Straight stems are highly important to herbaceous peony (Paeonia lactiflora Pall.) cut flowers. To clarify whether the microstructural and lignin characteristics are associated with P. lactiflora stem mechanical strength, eight cultivars were used to study their anatomical structure, secondary cell wall, lignin deposition, lignin content and structure, lignin biosynthetic enzyme activity and related gene expression levels. The results showed that stem diameter was a direct indicator estimating its mechanical strength. Simultaneously, the number of vascular bundles, area of vascular bundles, number of duct perforations, ratio of xylem to cross-section and thickness of secondary cell wall had significant positive correlations with stem mechanical strength. Moreover, three lignin monomers were all detected in the stem, and the contents of S-lignin, G-lignin and total lignin in high stem mechanical strength cultivars were higher than those in low stem mechanical strength cultivars as a whole, and lignin was deposited in the cell walls of the sclerenchyma, vascular bundle sheath and duct. Additionally, cinnamate 4-hydroxylase (C4H), cinnamyl alcohol dehydrogenase (CAD) and polyphenol oxidase (PPO) activities in high stem mechanical strength cultivars were higher than those in low stem mechanical strength cultivars as a whole, and CAD might be the key gene among detected lignin biosynthetic genes. Consequently, microstructural and lignin characteristics were closely correlated with stem mechanical strength in P. lactiflora. These results would provide useful information concerning the physiological mechanism of stem strength.
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
华仔应助2889580752采纳,获得10
1秒前
嘻嘻完成签到,获得积分10
1秒前
2秒前
丘比特应助科研通管家采纳,获得10
2秒前
领导范儿应助科研通管家采纳,获得10
2秒前
慕青应助科研通管家采纳,获得10
2秒前
2秒前
斯文败类应助科研通管家采纳,获得10
2秒前
2秒前
思源应助科研通管家采纳,获得10
2秒前
田様应助科研通管家采纳,获得10
2秒前
Volcano完成签到,获得积分10
2秒前
无花果应助俏皮的白柏采纳,获得10
3秒前
单薄的夜南应助宁学者采纳,获得10
3秒前
4秒前
4秒前
4秒前
5秒前
空禅yew发布了新的文献求助10
5秒前
华仔应助云辞忧采纳,获得10
7秒前
7秒前
Sunwenrui完成签到,获得积分10
7秒前
12完成签到,获得积分10
9秒前
whoami发布了新的文献求助10
10秒前
10秒前
搜集达人应助TTT0530采纳,获得10
11秒前
张大英发布了新的文献求助10
12秒前
12秒前
13秒前
tassssadar完成签到,获得积分10
13秒前
隐形曼青应助小猴子采纳,获得10
16秒前
17秒前
whoami完成签到,获得积分10
17秒前
Toong发布了新的文献求助10
17秒前
17秒前
17秒前
RR发布了新的文献求助10
18秒前
gyhmm发布了新的文献求助10
19秒前
20秒前
20秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3988868
求助须知:如何正确求助?哪些是违规求助? 3531255
关于积分的说明 11253071
捐赠科研通 3269858
什么是DOI,文献DOI怎么找? 1804822
邀请新用户注册赠送积分活动 881994
科研通“疑难数据库(出版商)”最低求助积分说明 809035