The morphology of stigma of Asteraceae observed by scanning electron microscopy

Lu, Xiaojian; Ye, Xiufen; Hu, Ziming; Liu, Jiaxi

doi:10.1002/jemt.24086

Cited by 4 publications

(2 citation statements)

References 60 publications

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“…Sporangium morphology and specific surface area of GLSP SEM has high resolution, great magnification and realistic threedimensional images, and is widely used in food science. 23 SEM images of unbroken and broken GLSP are shown in Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Effects of different wall‐breaking methods on the nutrient release of Ganoderma lucidum spore powder during in vitro digestion

Qi,

Zhong,

Pan

et al. 2024

J Sci Food Agric

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BackgroundThe hard double‐walled structure of Ganoderma lucidum spore powder (GLSP) is difficult for the human body to be digested, so it is very important to break the wall of GLSP.ResultsIn this study, the wall of GLSP was broken by mechanical milling at room temperature (MM‐R) and ultra‐fine grinding at low temperature (UFG‐L), respectively. Compared with MM‐R, UFG‐L can better retain the sporangium powder's morphological and structural integrity. During the in vitro digestion, compared with unbroken GLSP, the release amounts of polysaccharides and triterpenes from broken GLSP were significantly increased, and the release amounts increased with the increase of specific surface area. The bioaccessibility of polysaccharide and triterpene from unbroken GLSP after the intestinal stage were 29.52% and 5.37%, respectively. The bioaccessibility of polysaccharides and triterpene from broken GLSP by MM‐R after the intestinal phase were 39.73%–72.45% and 16.44%–24.97%, while those by UFG‐L were 44.53%–104.18% and 12.96%–32.90%, respectively.ConclusionIn conclusion, the active ingredients of broken GLSP showed better digestion and absorption abilities than unbroken GLSP. Moreover, the specific surface area of GLSP by UFG‐L was lower than that of MM‐R, and the bioaccessibility of GLSP by UFG‐L was higher than that of MM‐R.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Effects of different wall‐breaking methods on the nutrient release of Ganoderma lucidum spore powder during in vitro digestion

Qi,

Zhong,

Pan

et al. 2024

J Sci Food Agric

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“…This layer appears to be the site of the recognition reaction during pollination [2,[17][18][19]. The pellicle that covers papillae is present only in the families with a "dry" stigma [24][25][26]. Many other families show a moist "wet" stigma that, in the receptive stage, is covered by a sticky secretion product [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural Evidence Elucidates the Mode of Action of Sulfur in Preventing Pollen Tube Development in Stigma of Citrus cv. Nadorcott and Other Horticultural Species

et al. 2023

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Citrus species have a “wet”-type stigma with abundant exudate, and their style contains numerous canals. For successful seed formation, the process includes pollen grain germination on the stigma, pollen tube development and growth through the stigma and style and, ultimately, successful ovule fertilization. However, preventing the fertilization process can be useful for many agronomic and plant-breeding purposes, such as seedless fruits or for developing new varieties. Several studies have recently shown the inhibition effect of sulfur on pollen tube development inside the Nadorcott mandarin stigma and its effective application to obtain seedless mandarins. However, when applied to the stigma, how can sulfur inhibit pollen tube growth? Moreover, does sulfur have the same effect on other species? The main objective of the present study is to clarify the mode of action of sulfur on the ultrastructure of the Nadorcott mandarin stigma and style. To fulfill this goal, untreated flowers and flowers treated with sulfur were pollinated 24 h later. The treated and untreated stigmas were analyzed and compared with several microscopy techniques. The main results showed that sulfur specifically caused an alteration to the outer layer of stigma papillary cells. This marked alteration resulted in papillary cells losing their functionality due to the deterioration and degradation of their cellular structure. Basal papillae, the stigmatic tissue and stylar canals also underwent major alteration. Sulfur also modified the quantity and uniformity distribution of the stigmatic exudate. All these alterations collectively prevented pollen tube development inside the stigma. These effects have been observed in several Citrus species and varieties, and in some other horticultural species, which suggests a generic (non species-specific) action.

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An Intelligent Indicator Film Based on Food Derived Materials for Real-Time Visual Monitoring of Salmon Freshness

Yan,

Zhang,

Lin

et al. 2024

Journal of Aquatic Food Product Technology

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The morphology of stigma of Asteraceae observed by scanning electron microscopy

Cited by 4 publications

References 60 publications

Effects of different wall‐breaking methods on the nutrient release of Ganoderma lucidum spore powder during in vitro digestion

Effects of different wall‐breaking methods on the nutrient release of Ganoderma lucidum spore powder during in vitro digestion

Ultrastructural Evidence Elucidates the Mode of Action of Sulfur in Preventing Pollen Tube Development in Stigma of Citrus cv. Nadorcott and Other Horticultural Species

An Intelligent Indicator Film Based on Food Derived Materials for Real-Time Visual Monitoring of Salmon Freshness

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