Journal ArticleDOI
Effect of light intensity on photosynthesis and accumulation of sennosides in plant parts of senna (Cassia angustifolia Vahl.)
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TLDR
The gradual decline in Pn with later growth stages could be the reason for steady decline in sennosides content, particularly in the leaves and pods of both the cultivar ALFT 2 and Sona.Abstract:
The production of secondary metabolites in medicinal plants is influenced by quality of light. Two senna cultivars (ALFT 2 and Sona) were studied under field conditions at four different light levels (25, 50, 70 and 100 % of full sunlight) for photosynthetic performance and sennoside accumulation. The cultivar ALFT 2 recorded highest P
n
values of 31.27 μmol CO2 m−2 s−1 at 100 days after sowing (DAS), whereas Sona recorded the highest value of 30.7 μmol CO2 m−2 s−1 at 60 DAS under 100 % light. Lowest P
n
values of 12.1 and 11.07 μmol CO2 m−2 s−1 were recorded in ALFT 2 (120 DAS) and Sona (150 DAS), respectively under 25 % light. Sennoside A reduced by 30 % under 25 % light in leaf tissue of ALFT 2, whereas, a reduction of only 16 % was observed in Sona. Highest sennoside B content was observed in ALFT 2 under full sun light (2.03 %). ALFT 2 recorded comparatively higher total sennosides (4.76 %) in pods than Sona (4.57 %) under full light. The gradual decline in P
n
with later growth stages could be the reason for steady decline in sennosides content, particularly in the leaves and pods of both the cultivars.read more
Citations
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Journal ArticleDOI
Influence of green, red and blue light emitting diodes on multiprotein complex proteins and photosynthetic activity under different light intensities in lettuce leaves (Lactuca sativa L.).
TL;DR: The responses of chloroplast sub-compartment proteins, including those active in stomatal opening and closing, and leaf physiological responses at different light intensities, indicated induced growth enhancement upon illumination with blue LEDs.
Journal ArticleDOI
Effects of growth altitude on chemical constituents and delayed luminescence properties in medicinal rhubarb
Mengmeng Sun,Li Li,Mei Wang,Eduard P.A. Van Wijk,Min He,Roeland van Wijk,Slavik Koval,Thomas Hankemeier,Jan van der Greef,Shengli Wei +9 more
TL;DR: It is found that both the chemical analysis and DL measurements reflect variations in the quality of rhubarb due to environment factor, and DL is a promising tool for evaluating multiple constituents and for assessing the therapeutic properties of herbal medicines.
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Proteomic study related to vascular connections in watermelon scions grafted onto bottle-gourd rootstock under different light intensities.
Sowbiya Muneer,Chung Ho Ko,Prabhakaran Soundararajan,Abinaya Manivnnan,Yoo Gyeong Park,Byoung Ryong Jeong +5 more
TL;DR: The accumulation of key enzymes in the biological processes described above appears to play an important role in the vascular connections of grafted seedlings, and it appears that 100 μmol m−2 s−1 results in better protein expression responses in grafted plants.
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Non-target metabolomics revealed the differences between Rh. tanguticum plants growing under canopy and open habitats.
TL;DR: Wang et al. as discussed by the authors focused on the effect of habitats on Rheum tanguticum growth, particularly combining morphological and metabolic changes, and found that under-canopy and open-canvas habitats produced morphologically smaller Rh. tanguticums.
Book ChapterDOI
Tolerance mechanisms of medicinal plants to abiotic stresses
TL;DR: The adaptation and survival of plants grown under harsh environments cause remarkable variations at the cellular and molecular levels as mentioned in this paper, which can lead to the generation of reactive oxygen species including superoxide, hydrogen peroxide, and hydroxyl radical.
References
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