Programmed cell death: A mechanism for the lysigenous formation of secretory cavities in leaves of Dictamnus dasycarpus

Zhou, Yafu; Mao, Shao-Li; Li, Sifeng; Ni, Xilu; Li, Bin; Liu, Wenzhe

doi:10.1016/j.plantsci.2014.06.007

Cited by 18 publications

(27 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(Rutaceae), in which the secretory epithelium is formed by divisions in several planes (including the radial), with the subsequent programmed cell death of the innermost cells (Zhou, Shi & Liu, ). This epithelium development is similar to that observed for secretory cavities in family representatives (Chen & Wu, ; Bosabalidis, ; Zhou et al ., ).…”

Section: Discussionmentioning

confidence: 97%

The uncommon cavitated secretory trichomes inBauhinia s.s.(Fabaceae): the same roles in different organs

2015

View full text Add to dashboard Cite

Cavitated secretory trichomes are characterized by a short or absent stalk that is connected to a secretory hollow head. They are rare structures in angiosperms; in Fabaceae, they have been recorded in only seven genera, including Bauhinia s.s. Because B. curvula and B. rufa exhibit glands that are responsible for attracting pollinators to flowers, this study aimed to test whether the cavitated secretory trichomes present in the flowers of these species have an attraction function. As leaf trichomes are commonly related to plant defence, comparative analyses of the morphology, ontogeny, ultrastructure and chemical profile of the secretory trichomes present in flowers and leaves were conducted. It was found that cavitated secretory trichomes are similar in their external morphology and development, regardless of the organ or species analysed. However, interspecific differences were found in the secretion process and chemical profile of the exudate. The differences found in the cavitated secretory trichomes between species indicate that they secrete distinct compounds, whereas the similarities found in these structures between vegetative and reproductive organs indicate that the cavitated trichomes have equivalent ecological functions within a species, probably in plant defence during organ development. © 2015 The Linnean Society of London, Botanical Journal of the Linnean Society, 2016, 180, 104–122.

show abstract

Section: Discussionmentioning

confidence: 97%

The uncommon cavitated secretory trichomes inBauhinia s.s.(Fabaceae): the same roles in different organs

2015

View full text Add to dashboard Cite

show abstract

“…Previous studies have shown that, after being bruised or crushed, fresh young leaves of Japanese pepper release a diverse array of terpenes, in addition to C6 volatile compounds; however, intact leaves possess almost no aroma (Jiang and Kubota 2001). Therefore, terpenes are expected to be stored in Japanese pepper leaves in the specialized structures such as trichomes and oil secretory cavities (Liang et al 2006;Uji et al 2015;Voo et al 2012;Zhou et al 2014). …”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of volatile terpenes that accumulate in the secretory cavities of young leaves of Japanese pepper (<i>Zanthoxylum piperitum</i>): Isolation and functional characterization of monoterpene and sesquiterpene synthase genes

Fujita

Koeduka

Aida

et al. 2017

Plant Biotechnology

View full text Add to dashboard Cite

Volatile terpenes are ones of the characteristic aromas of Japanese pepper (Zanthoxylum piperitum). It has been hypothesized that the specialized epithelial cells surrounding the secretory cavities of Japanese pepper fruits and leaves are responsible for the synthesis of monoterpenes and sesquiterpenes, which are generally produced by terpene synthases (TPSs); however, direct evidence for the formation of terpenes in Japanese pepper remains elusive. Here we report that monoterpenes and sesquiterpenes accumulate inside the secretory cavities of Japanese pepper leaves, but not in other parts of leaf tissues that do not include secretory cavities. We have obtained cDNAs for ZpTPS1 and ZpTPS2, which are responsible for biosynthesis of the sesquiterpenes β-caryophyllene and germacrene D, respectively, in Japanese pepper. In addition, we also identified a cDNA for the monoterpene synthase ZpTPS3. Expression of ZpTPS3 in Escherichia coli in addition to Agrobacterium-mediated transient ZpTPS3 expression in Nicotiana benthamiana demonstrated the catalytic activity of ZpTPS3 to form β-phellandrene as the major product. In situ hybridization in Japanese pepper leaf tissue revealed that ZpTPS3 transcript specifically accumulated in the epithelial cells surrounding secretory cavities. Expression of ZpTPS3 in epithelial cells was only detectable during early stages of cavity development, whereas the formation of volatile terpenes occurred at a constant rate throughout the expansion of secretory cavities. Our studies have improved the understanding of the currently uncharacterized processes controlling volatile terpene biosynthesis in Japanese pepper leaves.

show abstract

“…Their distribution in the secretory cells is beneficial for the formation of RD regions and secretory pathways (Silva et al, 2015). Besides, organelles in the secretory cells play dominant roles in the formation of secretion (Cai, Zhou, & Hu, 2008; Zhou et al, 2014). In this study, the osmiophilic droplets were mainly distributed in the plastids, vacuoles, and cytoplasm of the secretory cells.…”

Section: Discussionmentioning

confidence: 99%

Microscopic anatomy and ultrastructure of the resin ducts of Ferula ferulaeoides (Steud.) Korov. in Xinjiang

Liu

Zhang

Liu

et al. 2020

Microscopy Res & Technique

View full text Add to dashboard Cite

Ferula ferulaeoides (Steud.) Korov. is a perennial herb that belongs to Umbelliferae (Apiaceae). Its resin and roots have extensive commercial and medicinal value in the Xinjiang region. However, the resin‐secreting resin ducts (RDs) of F. ferulaeoides have not been studied in detail. This study used optical and transmission electron microscopy to explore the anatomical features, including the distribution, size, and structure, of the RDs among different organs of F. ferulaeoides. The microstructure data revealed that the RDs consisted of a round lumen, a layer of secretory cells, and multiple layers of sheath cells. Notably, the RDs in stem were arranged alternatively in a multilayered ring with vascular bundles of three distinct sizes. The ultrastructural analysis revealed that organelles in the secretory cells potentially play important roles in resin secretion. Those data may be of great significance to understanding the anatomy of the RDs in Ferula L. and Umbelliferae.

show abstract

Programmed cell death: A mechanism for the lysigenous formation of secretory cavities in leaves of Dictamnus dasycarpus

Cited by 18 publications

References 41 publications

The uncommon cavitated secretory trichomes inBauhinia s.s.(Fabaceae): the same roles in different organs

The uncommon cavitated secretory trichomes inBauhinia s.s.(Fabaceae): the same roles in different organs

Biosynthesis of volatile terpenes that accumulate in the secretory cavities of young leaves of Japanese pepper (<i>Zanthoxylum piperitum</i>): Isolation and functional characterization of monoterpene and sesquiterpene synthase genes

Microscopic anatomy and ultrastructure of the resin ducts of Ferula ferulaeoides (Steud.) Korov. in Xinjiang

Contact Info

Product

Resources

About