Investigation of Exogenous Benzyladenine on Growth, Biochemical Composition, Photosynthesis and Antioxidant Activity of Indian Sandalwood (Santalum album L.) Seedlings

Zhang²,

et al. 2021

J Plant Growth Regul

Mulberry (Morus alba L.) leaf, a “source of both medicine and food”, contains antioxidant ingredients such as flavonoids, alkaloids and polyphenols. The effects of 6-benzylaminopurine (6-BA) treatment on plant growth and flavonoid contents in mulberry leaves were investigated in this study. The expression of rutin (Rut), chlorogenic acid (ChA), isoquercitrin (IQ) and astragaloside IV (Ast) related genes in the flavonoid synthesis pathways was investigated in mulberry leaves. The results showed that 6-BA treatment significantly promoted mulberry differentiation and growth as well as, increased the numbers of new shoots and buds compared to the control. In addition, 30 mg/L 6-BA significantly increased the contents of Rut, IQ and Ast, and it strongly induced the expression of flavonoid biosynthesis-related genes, including flavonoid 3-O-glucosyltransferase (F3GT), 4-xoumarate-CoA ligase (4CL), phenylalanine (PAL) and chalcone synthase (CHS). The dietary risk assessment of mulberry leaves was based on hormone residues 5 days after treatment with 30 mg /L 6-BA, and the results showed that the dietary exposure risk of 6-BA was extremely low without causing any health concern. Thus, treatment with 30 mg/L 6-BA is a new method to improve the medicinal quality and development of high-value mulberry leaf foods without any potential risk.

Section: Discussionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Foliar Spraying of 6-Benzylaminopurine Promotes Growth and Flavonoid Accumulation in Mulberry (Morus alba L.)

Zhang²,

et al. 2021

J Plant Growth Regul

“…Spraying leaves of 10-month-old sandal trees with BA at 1.0 mg/L promoted stem growth, crown width and dry biomass accumulation; enhanced the net photosynthetic rate and instantaneous water use efficiency; and stimulated photosynthetic pigment. However, height was considerably inhibited [ 18 ]. ETH increased heartwood formation but it inhibited vegetative growth [ 16 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Elicitors Modulate Young Sandalwood (Santalum album L.) Growth, Heartwood Formation, and Concrete Oil Synthesis

Cheng

et al. 2021

Plants

Five chemical elicitors––6-benzyladenine (BA), ethephon (ETH), methyl jasmonate (MeJA), hydrogen peroxide (H2O2) and calcium chloride (CaCl2)––were used to treat 1- and 5-year-old sandal trees (Santalum album L.) to assess their effects on growth, heartwood formation and concrete oil synthesis. The results showed that some newly formed branches in stems that were induced by BA and ETH displayed leaf senescence and developed new smaller and light-green leaves. The relative percentage of concrete oil from the heartwood of water-treated trees (0.65%) was significantly lower than that from trees treated with 4 mM H2O2 (2.85%) and 4 mM BA (2.75%) within one year. Four mM BA, H2O2 and CaCl2 induced a significantly higher level of sesquiterpenoids than heartwood treated with 2 mM of these elicitors. Four mM MeJA induced significantly less sesquiterpenoids than heartwood treated with 2 mM MeJA. Morphological, physiological, and chromatographic–spectrometric technologies were integrated to trace the potential function of these exogenously applied chemical elicitors. The results may have important applications and provide a better understanding of the molecular mechanism of heartwood formation and hardening in young sandalwood trees.

“…Sandeep et al (2016) observed that in Maharashtra, Orissa, Punjab, Rajasthan reported that maximum oil concentration is 1.0 to 2.29 per cent and estimated heartwood content was significantly varied with girth class and locations and heartwood content and oil per cent varied significantly with girth class, locations and host. The heartwood formation is not uniform with respect to the different host plants (Liu et al 2011) and also it depends on genetic makeup of the tree (Arunkumar et al 2012) M. dubia (BGB-1.83 t ha and CS-4.18 t ha , respectively). This -1 -1…”

Section: Methodsmentioning

confidence: 99%

Studies on Sandalwood Tree ( L.) Based Santalum album Agroforestry System in Haveri District of Karnataka, India

2023

IJE

Study was conducted during the year 2018-2021 at College of Forestry, Sirsi for studied on sandalwood tree ( ) Santalum album. L. based Agroforestry systems in Karnataka. The important objectives of this study were screening of secondary host plants on heartwood, oil content and carbon sequestration potential of sandalwood tree in different agroforestry systems of Karnataka in Haveri district and revealed that and 42.43 per cent with as 47.32 per cent in clear bole height of sandalwood trees with Swietenia mahogany Calliandra haematocephala compared to other secondary hosts. The volume of the main stem of sandalwood was increased by 85.08 per cent with and Moringa oleifera 83.37 per cent with The heartwood content of sandalwood tree increased by Casuarina equisetifolia as secondary host for sandalwood trees. 68.75 per cent with The per cent oil content of sandalwood tree was Casuarina equisetifolia Sesbania grandiflora. and 64.36 per cent in increased by 95.20 per cent with Casuarina equisetifolia Swietenia mahogani and 92.75 per cent with as secondary host of sandalwood tree. Carrbon sequestration potential of different host based sandalwood planation was highest capacity with the host of (21.05 Murraya koenigii tha ) and (20.19 tha ).