Zn-acquisition and its role in growth, photosynthesis, photosynthetic pigments, and biochemical changes in essential monoterpene oil(s) of Pelargonium graveolens

Misra, A.; Srivastava, Ankit; Srivastava, N. K.; Khan, Asifa

doi:10.1007/s11099-005-3155-3

Cited by 61 publications

(37 citation statements)

References 13 publications

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“…Production of geranial oil in P. graveolens was increased and chlorophyll content was higher after application of 24-epibrassinolide (Swamy and Rao, 2009). Optimal biomass production, photosynthetic rate, and essential oil synthesis was observed in P. graveolens when zinc was applied at a rate of 0.025 g • m -3 (Misra et al, 2005). These findings indicate a possible link between the chlorophyll content and the production of essential oils by this species of Pelargonium.…”

Section: Pelargonium Tomentosum Jacquin; Peppermint-scented Pelargoniummentioning

confidence: 61%

A Study of Oxygenation Techniques and the Chlorophyll Responses of Pelargonium tomentosum Grown in Deep Water Culture Hydroponics

Butcher¹,

Laubscher²,

Coetzee³

2017

horts

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Pelargonium tomentosum Jacq.; the peppermint-scented pelargonium, is an herbaceous groundcover indigenous to the Western Cape of South Africa. Volatile oils are produced by this plant, which are used in the fragrance industry. Studies on other Pelargonium species have shown chlorophyll content may affect the yield of essential oils. This study was carried out to investigate the viability of growing P. tomentosum in deep water culture (DWC) hydroponics and how best to aerate/oxygenate the nutrient solution to increase the chlorophyll content within leaves. The experiment was conducted over a period of 74 days, 16 different methods of oxygenation were applied to 9 replicates. The control had passive aeration; the treatments were made up of air-pumps, vortex oxygenators, and the application of hydrogen peroxide at various frequency intervals; these were combined with each other and run as separate oxygenation methods. The measurement of the chlorophyll content of plant leaves has been established to be an accurate way of establishing vigor, health, and levels of stress. It was found that the combination of high-frequency application (every third day) of hydrogen peroxide, vortex oxygenation, and air-pump injection (both operational for 24 hours/day) which formed treatment 11 (APVHa), yielded the highest production of chlorophyll within all the replicates differing significantly (P ≤ 0.001) from the control and other treatments.

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Section: Pelargonium Tomentosum Jacquin; Peppermint-scented Pelargoniummentioning

confidence: 61%

A Study of Oxygenation Techniques and the Chlorophyll Responses of Pelargonium tomentosum Grown in Deep Water Culture Hydroponics

Butcher¹,

Laubscher²,

Coetzee³

2017

horts

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“…Foliar spraying (micro- and macronutrients) under saline conditions could be much more efficient than any other application of nutrients to the soil (El-Fouly et al, 2001 ). Several reports are reported to the zinc application in plants highlighting its stimulatory effects, such as on basil (Said-Al Ahl and Mahmoud, 2010 ), geranium (Misra et al, 2005 ), and coriander (Said-Al Ahl and Omer, 2009 ). Misra et al ( 2005 ) stated that EO biosynthesis in geranium was greatly influenced by zinc acquisition or deficiency.…”

Section: Introductionmentioning

confidence: 99%

Physiological and Biochemical Responses of Lavandula angustifolia to Salinity Under Mineral Foliar Application

2018

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Saline water has been proposed as a solution to partially cover plant water demands due to scarcity of irrigation water in hot arid areas. Lavender (Lavandula angustifolia Mill.) plants were grown hydroponically under salinity (0–25–50–100 mM NaCl). The overcome of salinity stress was examined by K, Zn, and Si foliar application for the plant physiological and biochemical characteristics. The present study indicated that high (100 mM NaCl) salinity decreased plant growth, content of phenolics and antioxidant status and essential oil (EO) yield, while low-moderate salinity levels maintained the volatile oil profile in lavender. The integrated foliar application of K and Zn lighten the presumable detrimental effects of salinity in terms of fresh biomass, antioxidant capacity, and EO yield. Moderate salinity stress along with balanced concentration of K though foliar application changed the primary metabolites pathways in favor of major volatile oil constituents biosynthesis and therefore lavender plant has the potential for cultivation under prevalent semi-saline conditions. Zn and Si application, had lesser effects on the content of EO constituents, even though altered salinity induced changings. Our results have demonstrated that lavender growth/development and EO production may be affected by saline levels, whereas mechanisms for alteration of induced stress are of great significance considering the importance of the oil composition, as well.

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“…Excess HCO 3 − or Zn deficiency inhibits photosynthesis and PS II, which influences photosynthetic and chlorophyll (Chl) fluorescence parameters [9–11]. HCO 3 − , which is considered the key factor that influences Fe deficiency chlorosis and Zn deficiency in many plant species [12], is the major anion found in calcareous soils in karst regions.…”

Section: Introductionmentioning

confidence: 99%

Effects of Zn Deficiency and Bicarbonate on the Growth and Photosynthetic Characteristics of Four Plant Species

Zhao

2017

PLoS ONE

101

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Calcareous soils are characterized by low nutrient contents, high bicarbonate (HCO3−) content, and high alkalinity. The effects of HCO3− addition under zinc-sufficient (+Zn) and zinc-deficient (−Zn) conditions on the growth and photosynthetic characteristics of seedlings of two Moraceae species (Broussonetia papyrifera and Morus alba) and two Brassicaceae species (Orychophragmus violaceus and Brassica napus) were investigated. These four species were hydroponically grown in nutrient solution with 0 mM Zn (−Zn) or 0.02 mM Zn (+Zn) and 0 mM or 10 mM HCO3−. The photosynthetic response to HCO3− treatment, Zn deficiency, or both varied according to plant species. Of the four species, Broussonetia papyrifera showed the best adaptability to Zn deficiency for both the 0 mM and 10 mM HCO3− treatments due to its strong growth and minimal inhibition of photosynthesis and photosystem II (PS II). Brassica napus was sensitive to Zn deficiency, HCO3− treatment, or both as evidenced by the considerable inhibition of photosynthesis and high PS II activity. The results indicated different responses of various plant species to Zn deficiency and excess HCO3−. Broussonetia papyrifera was shown to have potential as a pioneer species in karst regions.

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Zn-acquisition and its role in growth, photosynthesis, photosynthetic pigments, and biochemical changes in essential monoterpene oil(s) of Pelargonium graveolens

Cited by 61 publications

References 13 publications

A Study of Oxygenation Techniques and the Chlorophyll Responses of Pelargonium tomentosum Grown in Deep Water Culture Hydroponics

A Study of Oxygenation Techniques and the Chlorophyll Responses of Pelargonium tomentosum Grown in Deep Water Culture Hydroponics

Physiological and Biochemical Responses of Lavandula angustifolia to Salinity Under Mineral Foliar Application

Effects of Zn Deficiency and Bicarbonate on the Growth and Photosynthetic Characteristics of Four Plant Species

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