Growth, photosynthetic pigment content and oil yield ofPogostemon cablin grown under sun and shade conditions

Misra, Meena

doi:10.1007/bf02913216

Cited by 7 publications

(9 citation statements)

References 14 publications

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“…Our findings are consistent with the fact that low light induced reduction in leaf protein (Burkey et al 1997). The low level of soluble proteins in the plants grown in light limiting conditions could be explained as the possible reduction in Rubisco synthesis which constitutes as a major soluble protein of leaves (Misra 1995).…”

Section: Discussionsupporting

confidence: 91%

“…Relative increase in accessory pigment like Chl b is adaptive response of plants to variable PPFD. Chl b is associated with distal antennae of LHCP II, the relative changes in this pigment could indicate a change in the distal antenna size (Misra 1995). The increase in the distal antenna size under low light grown leaves probably increases the relative radius of solar energy interception in a chloroplast.…”

Section: Discussionmentioning

confidence: 99%

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Determination of critical low light limit and adaptive physiological and biochemical traits regulating growth and yield of mustard (Brassica juncea Coss.)

Alam¹,

Singh²,

Chaturvedi³

et al. 2018

Physiol Mol Biol Plants

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Growth and physio-biochemical traits under different incident solar light intensities (100, 67, 50 and 25%) were studied in mustard in a semi-arid agroclimate region of Central India. Our comprehensive studies revealed that incident solar light intensities below about 67% were highly detrimental in mustard for its growth and grain yield. Major factors that contributed to the differential responses under varying light intensities were identified which holds importance for better understanding of low light adaptability in an important oilseed crop like mustard. Biomass index (ratio of dry biomass to height) has been established and evaluated for the differential growth performance of the crop under different light intensities. Biomass index progressively declined from 0.48 (open sunlight) to 0.11 (25% sunlight). Physio-biochemical factors were identified that were playing major role in manifestation of the differential growth and grain yield. Mustard exhibited its low light adaptive trends through differential down-regulation in the rates of net CO assimilation (P), stomatal conductance, transpiration, thylakoid electron transport rate (ETR) and leaf wax level. For example, P decreased from 35.88 (open light) to 11.64 µmol m s (25% sunlight). Photochemical events showed critical impact as evidenced by decreased PSII quantum yield, photochemical quenching (qP) and higher non-photochemical quenching (qN) that were clearly associated with physiological efficiency of the plants under varying light intensities. Leaf wax level decreased from 1.69 mg g fresh weight (open light) to 0.96 mg g fresh weight (25% sunlight). Our results indicated that limited ETR supply across photosystem II (PSII) decreased the photochemical efficiency and carbon gain under low light which resulted in reduction of biomass index and grain yield. Besides, it was found that overexpression of protein band around ~ 26 kDa in low light could be another adaptive feature for mustard related to light harvesting complex. Our findings would augment selection of traits for optimizing growth and grain yield of mustard for low light or light limiting agro-ecosystem.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Determination of critical low light limit and adaptive physiological and biochemical traits regulating growth and yield of mustard (Brassica juncea Coss.)

Alam¹,

Singh²,

Chaturvedi³

et al. 2018

Physiol Mol Biol Plants

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“…Misra obtained the same result for foliar application of gibberellin . When patchouli plants were grown under sun and shade conditions, there was no significant difference in oil content in one study, while in two other studies unshaded plants contained more oil . When 11 different arbuscular mycorrhizal fungi were tested, one was found to increase significantly both biomass and oil content…”

Section: Influence Of Fertilisation Harvesting Time Drying Fermentmentioning

confidence: 55%

“…The average oil percentage in “dried” P. cablin leaves as reported in 72 references was calculated as 2.6% (ranges: 0.54 – 5.2%) . However in view of the discussion below, this figure is not precise as it is dependent on the exact plant material used (cultivar, age, soil and growth conditions), percentage of stems as well as foreign materials (soil, other plant species like weeds), drying and/or fermentation, storage, final percentage of water and the distillation technique, conditions and duration.…”

Section: Influence Of Fertilisation Harvesting Time Drying Fermentmentioning

confidence: 99%

The essential oil of patchouli,Pogostemon cablin: A review

Beek

Joulain²

2017

Flavour & Fragrance J

123

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The leaves of Pogostemon cablin (Blanco) Benth. (Lamiaceae) are the source of patchouli essential oil, which is -with an annual production of about 1300 tonnes -an important and unique commodity in the fragrance industry. All the literature pertaining to patchouli was critically reviewed with an emphasis on the qualitative and quantitative chemical analysis of the oil but also harvesting, fermentation, drying, distillation, used analytical techniques, sensory aspects including molecules responsible for the odour, adulteration and toxicological aspects, i.e., skin sensitisation, are discussed. In total 72 constituents have been convincingly identified in the oil and another 58 tentatively. The main constituent is the sesquiterpene patchoulol. For this review over 600 papers were consulted and in the supplementary information all patchouli-related references not relevant enough to be cited in the paper itself are listed. 6 It has been stated that "this oil is one of the most important materials available to the perfumer." 7 Approximately 90% of today's global production of 1200-1300 metric tonnes per annum is realised in Indonesia. --------------------------------------------------------------------------------------------------------------------------------This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Chl content is closely related to plant photosynthesis and also a reflection of a plant growth state (Misra 1995). To determine the effects of 2 % methanol spray on the Chl content of YD plants, changes in the leaf Chl content of YD plants were analyzed after the final 2 % methanol spraying for 24 h. Compared with the control YD 0 , foliar spray of 2 % methanol increased total Chl (a?b) by 2.5 % (Fig.…”

Section: Resultsmentioning

confidence: 99%

Deciphering the molecular responses to methanol-enhanced photosynthesis and stomatal conductance in broad bean

Zhao

Zeng

et al. 2014

Acta Physiol Plant

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Growth, photosynthetic pigment content and oil yield ofPogostemon cablin grown under sun and shade conditions

Cited by 7 publications

References 14 publications

Determination of critical low light limit and adaptive physiological and biochemical traits regulating growth and yield of mustard (Brassica juncea Coss.)

Determination of critical low light limit and adaptive physiological and biochemical traits regulating growth and yield of mustard (Brassica juncea Coss.)

The essential oil of patchouli,Pogostemon cablin: A review

Deciphering the molecular responses to methanol-enhanced photosynthesis and stomatal conductance in broad bean

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