Amorphous areas in the cytoplasm of<i><i>Dendrobium</i></i>tepal cells

Doorn, Wouter G. van; Kirasak, Kanjana; Ketsa, Saichol

doi:10.4161/auto.24784

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…The presence of only very thin cell walls after the cells had died was shown by van Doorn et al. (2013). It is concluded that during PCD of petal mesophyll cells in Dendrobium flowers the cell wall shows extensive swelling and indications of degradation.…”

Section: Postharvest Physiologymentioning

confidence: 75%

The Dendrobium Orchid: Botany, horticulture, and utilization

Ketsa

Warrington

2023

Crop Science

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Dendrobium, one of the largest genera of tropical orchids, is grown commercially on a large scale with an important economic impact in several ASEAN countries.Dendrobium orchids can be grown in a wide range of climates, but flower production is best under tropical conditions. Due to being the most popular orchid for cut flower production, many hybrids of Dendrobium have been produced with colorful and attractive blooms. Cut flowers of Dendrobium are popular worldwide. In addition, many Dendrobium cultivars can be grown as flowering potted plants and for other purposes such as in medicinal applications and for use in decorative products. Postharvest physiology and technology are important in maintaining the quality of both cut flowers and potted plants from production sites to the marketplace. Plants of the Dendrobium genus also contain a wide diversity of bioactive compounds that can be developed into medicinal and cosmetic products. This review describes the botany, cultivation, postharvest physiology, handling and utilization of Dendrobium.

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Section: Postharvest Physiologymentioning

confidence: 75%

The Dendrobium Orchid: Botany, horticulture, and utilization

Ketsa

Warrington

2023

Crop Science

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“…TEM was used for the observation of microautophagic structures in the dying nucellar cells of a flower of Pinus densiflora [74], and it was observed that the vacuolar membrane invaginates cellular materials for their degradation, which generates the nutrient for pollen tube growth. TEM also showed the role of microautophagy in vacuole development in a study of mesophyll cells in tepals of a Dendrobium orchid [75]. The vacuolar volume increases in the mesophyll cells before flower opening, and TEM observation suggested involvement of autophagy in this event.…”

Section: Methods For Microautophagy Observationmentioning

confidence: 87%

Microautophagy in Plants: Consideration of Its Molecular Mechanism

Sieńko

Poormassalehgoo

Yamada

et al. 2020

Cells

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Microautophagy is a type of autophagy. It is characterized by direct enclosing with the vacuolar/lysosomal membrane, which completes the isolation and uptake of cell components in the vacuole. Several publications present evidence that plants exhibit microautophagy. Plant microautophagy is involved in anthocyanin accumulation in the vacuole, eliminating damaged chloroplasts and degrading cellular components during starvation. However, information on the molecular mechanism of microautophagy is less available than that on the general macroautophagy, because the research focusing on microautophagy has not been widely reported. In yeast and animals, it is suggested that microautophagy can be classified into several types depending on morphology and the requirements of autophagy-related (ATG) genes. This review summarizes the studies on plant microautophagy and discusses possible techniques for a future study in this field while taking into account the information on microautophagy obtained from yeast and animals.

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Macroautophagy occurs in distal TMV-uninfected root tip tissue of tomato taking place systemic PCD

Zhou

Yang

et al. 2017

Protoplasma

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Autophagy is an important mechanism for recycling cell materials upon encountering stress conditions. Our previous studies had shown that TMV infection could lead to systemic PCD in the distal uninfected tissues, including root tip and shoot tip tissues. But it is not clear whether there is autophagy in the distal apical meristem of TMV-induced plants. To better understand the autophagy process during systemic PCD, here we investigated the formation and type of autophagy in the root meristem cells occurring PCD. Transmission electron microscopy assay revealed that the autophagic structures formed by the fusion of vesicles, containing the sequestered cytoplasm, multilamellar bodies, and degraded mitochondria. In the PCD progress, many mitochondria appeared degradation with blurred inner membrane structure. And the endoplasmic reticulum was broke into small fragments. Finally, the damaged mitochodria were engulfed and degraded by the autophagosomes. These results indicated that during the systemic PCD process of root tip cells, the classical macroautophagy occurred, and the cell contents and damaged organelles (mitochondria) would be self-digested by autophagy.

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Amorphous areas in the cytoplasm ofDendrobiumtepal cells

Cited by 7 publications

References 18 publications

The Dendrobium Orchid: Botany, horticulture, and utilization

The Dendrobium Orchid: Botany, horticulture, and utilization

Microautophagy in Plants: Consideration of Its Molecular Mechanism

Macroautophagy occurs in distal TMV-uninfected root tip tissue of tomato taking place systemic PCD

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