Cytological features of oogenesis and their evolutionary significance in the fern Osmunda japonica

Cao, Ji; Dai, Xiao-Fei; Wang, Quanxi

doi:10.1007/s00497-011-0179-7

Cited by 8 publications

(2 citation statements)

References 17 publications

(37 reference statements)

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“…Thus, the roots of Osmunda japonica Thunb are widely used in traditional Chinese medicine for fever relief, detoxification, and deworming (Xu et al, 2019). Currently, only a few studies have investigated polysaccharides of Osmunda japonica Thunb (Cao, Dai, & Wang, 2011;Dai, Ren, Cao, & Wang, 2017;Wang & Fang, 2004). However, there are relevant references investigating polysaccharide-based coatings (Arnon, Granit, Porat, & Poverenov, 2015).…”

mentioning

confidence: 99%

Effect of polysaccharide derived from Osmunda japonica Thunb ‐incorporated carboxymethyl cellulose coatings on preservation of tomatoes

Zhang

Liu

et al. 2019

J Food Process Preserv

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Polysaccharides from Osmunda japonica Thunb (Op) exhibit a wide range of biological activities including antibacterial, anti‐inflammatory, antioxidant, and antitumor effects. Carboxymethyl cellulose (CMC) is a type of cellulose derivative that can form dense films. CMC can slow the respiratory transpiration of tomatoes and reduce water evaporation. Coatings of CMC (0.7% concentration) with various levels of Op (0.02%, 0.04%, 0.06%, 0.08%, and 0.1%) were used to preserve tomatoes at room temperature. The treatment, weight loss, hardness, titratable acidity (TA), respiratory intensity, and concentrations of ascorbic acid, polyphenol oxidase, and malondialdehyde (MDA) were evaluated in tomatoes after 0, 5, 10, 15, 20, and 25 days of storage. Compared with untreated tomatoes, the tomatoes with Op‐incorporated CMC coatings had reduced respiratory intensity, weight loss and ascorbic acid loss, increased TA, controlled MDA, and inhibited the decay of tomatoes. Therefore, the use of Op‐incorporated CMC coatings extended the shelf life and maintained the quality of postharvest tomatoes. Practical applications In the past decades, the use of edible coatings has attracted widespread interest in extending the shelf life of particularly perishable foods. Currently, applications of edible coatings have been proven to be promising as a tool to improve the quality and extend the shelf life of various fruits. But there have been no reports on the effect of Op‐incorporated CMC treatment on the postharvest quality of tomatoes during storage. The purpose of this work is to investigate the efficiency of Op‐incorporated CMC treatment to extend shelf life and provide theoretical guidance for the preservation of tomatoes.

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confidence: 99%

Effect of polysaccharide derived from Osmunda japonica Thunb ‐incorporated carboxymethyl cellulose coatings on preservation of tomatoes

Zhang

Liu

et al. 2019

J Food Process Preserv

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“…Diverse non-green plastid morphotypes developed early in the evolutionary history of land plants to adapt to challenges of life on land. All vascular plant lineages possess gravitropic amyloplasts to guide root development, and amyloplasts also appear in the reproductive cells of primitive vascular plants as a means of storage (Bell, 1986;Cao et al, 2012;Zhang et al, 2019). Chromoplasts appear in all seed plant lineages as well, suggesting a common origin at least 300 million years ago (Whatley, 1985;Jiao et al, 2011), likely a result of the importance of photoprotection and interactions with animals for all seeded plants.…”

Section: Evolution Of the Plastidmentioning

confidence: 99%

Understanding protein import in diverse non-green plastids

Christian

Labbancz²,

Usadel³

et al. 2023

Front. Genet.

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The spectacular diversity of plastids in non-green organs such as flowers, fruits, roots, tubers, and senescing leaves represents a Universe of metabolic processes in higher plants that remain to be completely characterized. The endosymbiosis of the plastid and the subsequent export of the ancestral cyanobacterial genome to the nuclear genome, and adaptation of the plants to all types of environments has resulted in the emergence of diverse and a highly orchestrated metabolism across the plant kingdom that is entirely reliant on a complex protein import and translocation system. The TOC and TIC translocons, critical for importing nuclear-encoded proteins into the plastid stroma, remain poorly resolved, especially in the case of TIC. From the stroma, three core pathways (cpTat, cpSec, and cpSRP) may localize imported proteins to the thylakoid. Non-canonical routes only utilizing TOC also exist for the insertion of many inner and outer membrane proteins, or in the case of some modified proteins, a vesicular import route. Understanding this complex protein import system is further compounded by the highly heterogeneous nature of transit peptides, and the varying transit peptide specificity of plastids depending on species and the developmental and trophic stage of the plant organs. Computational tools provide an increasingly sophisticated means of predicting protein import into highly diverse non-green plastids across higher plants, which need to be validated using proteomics and metabolic approaches. The myriad plastid functions enable higher plants to interact and respond to all kinds of environments. Unraveling the diversity of non-green plastid functions across the higher plants has the potential to provide knowledge that will help in developing climate resilient crops.

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Arabinogalactan proteins and arabinan pectins abound in the specialized matrices surrounding female gametes of the fern Ceratopteris richardii

Lopez

Renzaglia

2016

Planta

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Both male and female gametes of archegoniates are highly specialized cells surrounded by an extraprotoplasmic matrix rich in AGPs, which are speculated to facilitate development and gamete fusion through Ca 2+) oscillations. An additional layer, the egg envelope, forms around the egg periphery, except at the fertilization pore, and contains arabinose-rich polymers that presumably impart flexibility for the rapidly growing zygote and embryo. The abundant AGPs and arabinan pectins associated with the eggs of C. richardii not only are integral to development, fertilization, and early embryogenesis, but also may be involved in desiccation tolerance important to the survival of the reproductive gametophyte. A defining feature of gametogenesis in archegoniates is the deposition of a special matrix outside of the plasmalemma of both egg and sperm cells that displaces the primary cell wall away from the protoplasm. It is within this matrix that gamete differentiation occurs. In leptosporangiate ferns, maturation of the egg cell involves the deposition of a second specialized wall, the so-called egg envelope that surrounds the cell except at the fertilization pore, a narrow site where gamete fusion takes place. We provide the first conclusive evidence of the macromolecular constituents in the unique structures surrounding fern egg cells before and after fertilization. To test the hypotheses that the egg extracellular matrix contains arabinogalactan proteins (AGPs) as does the sperm cell matrix, and that cell wall polysaccharides, especially pectins, are components of the egg envelope, we examined the expression patterns of AGPs and cell wall constituents during oogenesis in Ceratopteris richardii. Utilizing histochemical stains for callose, cellulose and AGPs coupled with immunogold localizations employing a suite of monoclonal antibodies to cell wall components (JIM13, JIM8, LM2, LM5, LM6, LM19, LM20 and anticallose), we demonstrate that AGPs, but not pectins, are abundant in the matrix around egg cells and degrading neck canal and ventral canal cells during archegonial development. A striking finding is that both AGPs and (1,5)-α-L-arabinan pectin epitopes are principle components of the egg envelope before and after fertilization, suggesting that they are important in both egg maturation and gamete fusion.

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Cytological features of oogenesis and their evolutionary significance in the fern Osmunda japonica

Cited by 8 publications

References 17 publications

Effect of polysaccharide derived from Osmunda japonica Thunb ‐incorporated carboxymethyl cellulose coatings on preservation of tomatoes

Effect of polysaccharide derived from Osmunda japonica Thunb ‐incorporated carboxymethyl cellulose coatings on preservation of tomatoes

Understanding protein import in diverse non-green plastids

Arabinogalactan proteins and arabinan pectins abound in the specialized matrices surrounding female gametes of the fern Ceratopteris richardii

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