Bioactivities of Cocos nucifera L. (Arecales: Arecaceae) and Terminalia catappa L. (Myrtales: Combretaceae) leaf extracts as post-harvest grain protectants against four major stored product pests

<div>Root (wilt) disease (RWD), caused by phytoplasma, is a major problem causing decreased coconut productivity in southern districts of Kerala and its bordering districts of Tamil Nadu in India. The disease is non-curable but its incidence can be reduced by propagating seedlings from nuts of disease free palms. The disease free palms are selected by ELISA test which uses antiserum obtained from rabbits against purified phytoplasma extract containing 29, 28 and 18.5 K Da proteins. With an objective of developing a simpler and easier biochemical test than ELISA for RWD detection in coconut , direct SDS PAGE profiles of soluble proteins from crude leaf extracts of healthy and diseased palms of West Coast Tall (susceptible) , Chowghat Green Dwarf and Malayan Green Dwarf (high degree resistant) cultivars were evaluated for differences in intensities of protein bands with molecular masses corresponding closest to the purified phytoplasma extract proteins. It was found that the 31.2, 37.3, 16.9 and 13.8 KDa bands in WCT cultivar, 31 and 40.6 KDa in CGD cultivar and 29.9 and 37.1 KDa bands in the MGD cultivar showed consistent differences in intensities and/or presence or absence of certain bands between healthy and diseased palms. Correlations and path analysis relationship between intensity of different protein bands and ELISA value also showed significant association of one or two of these marker bands with ELISA values in each cultivar. The SDS PAGE profiles of crude leaf extracts could be used to effectively distinguish healthy and diseased RWD palms in these three cultivars.</div>

Download Full-text

Growth of Dracaena marginata and Spathiphyllum ‘Petite’ in Sphagnum Peat- and Coconut Coir Dust-based Growing Media

Journal of Environmental Horticulture ◽

10.24266/0738-2898-17.1.49 ◽

1999 ◽

Vol 17 (1) ◽

pp. 49-52 ◽

Cited By ~ 4

Author(s):

Robert H. Stamps ◽

Michael R. Evans

Keyword(s):

Growth Parameters ◽

Cocos Nucifera ◽

Greenhouse Production ◽

Growing Media ◽

Sphagnum Peat ◽

Affected Plant ◽

Coir Dust ◽

Media Component ◽

The Media ◽

Cocos Nucifera L

Abstract A comparison was made of Canadian sphagnum peat (SP) and Philippine coconut (Cocos nucifera L.) coir dust (CD) as growing media components for greenhouse production of Dracaena marginata Bak. and Spathiphyllum Schott ‘Petite’. Three soilless foliage plant growing mixes (Cornell, Hybrid, University of Florida #2 [UF-2]) were prepared using either SP or CD and pine bark (PB), vermiculite (V), and/or perlite (P) in the following ratios (% by vol): Cornell = 50 CD or SP:25 V:25 P, Hybrid = 40 CD or SP:30 V:30 PB, UF-2 = 50 CD or SP: 50 PB. Dracaena root growth was not affected by treatments but there were significant mix × media component interactions that affected plant top growth parameters. In general, the growth and quality of D. marginata were reduced by using CD in Cornell, had no effect in Hybrid, and increased in UF-2. S. ‘Petite’ grew equally well in all growing mixes regardless of whether CD or SP was used; however, plants grew more in Cornell and Hybrid than in UF-2. S. ‘Petite’ roots, which were infested with Cylindrocladium spathiphylli, had higher grades when grown in CD than when the media contained SP.

Download Full-text

Etude anatomique des faisceaux pétiolaires de Cocos nucifera L.

Bulletin mensuel de la Société linnéenne de Lyon ◽

10.3406/linly.1959.8028 ◽

1959 ◽

Vol 28 (1) ◽

pp. 4-8

Author(s):

Christian Ginieis

Keyword(s):

Cocos Nucifera ◽

Cocos Nucifera L

Download Full-text

Diversity in Mohachao Narel, a Sweet Endosperm Coconut (Cocos nucifera L.) Population from Maharashtra, India

National Academy Science Letters ◽

10.1007/s40009-013-0128-0 ◽

2013 ◽

Vol 36 (3) ◽

pp. 319-330 ◽

Cited By ~ 2

Author(s):

K. Samsudeen ◽

M. K. Rajesh ◽

D. D. Nagwaker ◽

Raghavan Reshmi ◽

P. Ajith Kumar ◽

...

Keyword(s):

Cocos Nucifera ◽

Cocos Nucifera L

Download Full-text

Cocos nucifera L. oil alleviates lead acetate-induced reproductive toxicity in sexually-matured male Wistar rats

Journal of Basic and Clinical Physiology and Pharmacology ◽

10.1515/jbcpp-2020-0281 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Olugbemi T. Olaniyan ◽

Olakunle A. Ojewale ◽

Ayobami Dare ◽

Olufemi Adebayo ◽

Joseph E. Enyojo ◽

...

Keyword(s):

Luteinizing Hormone ◽

Lead Acetate ◽

Wistar Rats ◽

Histological Analysis ◽

Cocos Nucifera ◽

Reproductive Toxicity ◽

Positive Control ◽

Negative Control ◽

Male Wistar Rats ◽

Cocos Nucifera L

Abstract Objectives Lead primarily affects male reproductive functions via hormonal imbalance and morphological damage to the testicular tissue with significant alteration in sperm profile and oxidative markers. Though, different studies have reported that Cocos nucifera L. oil has a wide range of biological effects, this study aimed at investigating the effect of Cocos nucifera L. oil on lead acetate-induced reproductive toxicity in male Wistar rats. Methods Twenty (20) sexually matured male Wistar rats (55–65 days) were randomly distributed into four groups (n=5). Group I (negative control)—distilled water orally for 56 days, Group II (positive control)—5 mg/kg bwt lead acetate intraperitoneally (i.p.) for 14 days, Group III—6.7 mL/kg bwt Cocos nucifera L. oil orally for 56 days and Group IV—lead acetate intraperitoneally (i.p.) for 14 days and Cocos nucifera L. oil for orally for 56 days. Rats were sacrificed by diethyl ether, after which the serum, testis and epididymis were collected and used for semen analysis, biochemical and histological analysis. Results The lead acetate significantly increases (p<0.05) testicular and epididymal malondialdehyde (MDA) levels, while a significant reduction (p<0.05) in sperm parameters, organ weight, testosterone and luteinizing hormone was observed when compared with the negative control. The coadministration of Cocos nucifera oil with lead acetate significantly increases (p<0.05) testosterone, luteinizing hormone, sperm parameters and organ weight, with a significant decrease (p<0.05) in MDA levels compared with positive control. Histological analysis showed that lead acetate distorts testicular cytoarchitecture and germ cell integrity while this was normalized in the cotreated group. Conclusions Cocos nucifera oil attenuates the deleterious effects of lead acetate in male Wistar rats, which could be attributed to its polyphenol content and antioxidant properties.

Download Full-text