Monoterpenes: relationship between structure and inhibition of germination

Asplund, Rita

doi:10.1016/s0031-9422(00)90758-1

Cited by 90 publications

(51 citation statements)

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“…In the natural ecosystems they play an important role in plant-plant interactions, defense mechanism (as plant protectants), herbivory and as pollinator attractants and thus help in maintaining delicate balance in ecosystems (Swain, 1977;Fischer, 1991;Vokou, 1999;Paiva, 2000). Being potent inhibitors of seed germination monoterpenes are involved in allelopathic interactions among plants and thus play an important role in structuring and patterning of plant communities (Muller, 1965;Asplund, 0939Ð5075/2006/0500Ð0334 $ 06.00 " 2006 Verlag der Zeitschrift für Naturforschung, Tübingen · http://www.znaturforsch.com · D 1968; Abrahim et al, 2000;Singh et al, 2002a, b;Weidenhamer et al, 1993;Vokou, 1999). This property of monoterpenoids coupled with their biodegradable nature and little toxicity against mammals and other non-target species makes them chemicals of immense interest and potential for agroindustry (Isman, 2000;Beuchat, 2001).…”

Section: Introductionmentioning

confidence: 99%

Phytotoxicity of the Volatile Monoterpene Citronellal against Some Weeds

Singh

Batish

Kaur

et al. 2006

Zeitschrift Für Naturforschung C

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A study was undertaken to assess the phytotoxicity of citronellal, an oxygenated monoterpenoid with an aldehyde group, towards some weedy species [Ageratum conyzoides L., Chenopodium album L., Parthenium hysterophorus L., Malvastrum coromandelianum (L.), Garcke, Cassia occidentalis L. and Phalaris minor Retz.]. A significant effect on weed emergence and early seedling growth was observed in a dose-response based laboratory bioassay in a sand culture. Emergence of all test weeds was completely inhibited at 100 μg/g sand content of citronellal. Seeds of A. conyzoides and P. hysterophorus failed to emerge even at 50 μg/g content. Root length was inhibited more compared to shoot length. The failure of root growth was attributed to the effect of citronellal on the mitotic activity of growing root tips cells as ascertained by the onion root tip bioassay. At 2.5 mm treatment of citronellal, mitosis was completely suppressed and at higher concentrations cells showed various degrees of distortion and were even enucleated. The post-emergent application of citronellal also caused visible injury in the form of chlorosis and necrosis, leading to wilting and even death of test weeds. Among the test weeds, the effect was severe on C. album and P. hysterophorus. There was loss of chlorophyll pigment and reduction in cellular respiration upon citronellal treatment indicating the impairment of photosynthetic and respiratory metabolism. Scanning electron microscopic studies in C. occidentalis leaves upon treatment of citronellal revealed disruption of cuticular wax, clogging of stomata and shrinkage of epidermal cells at many places. There was a rapid electrolyte leakage in the leaf tissue upon exposure to citronellal during the initial few hours. In P. minor electrolyte leakage in response to 2 mm citronellal was closer to the maximum leakage that was obtained upon boiling the tissue. The rapid ion leakage is indicative of the severe effect of citronellal on the membrane structure and loss of membrane integrity. In all, the study concludes that citronellal causes a severe phytotoxicity on the weeds.

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Section: Introductionmentioning

confidence: 99%

Phytotoxicity of the Volatile Monoterpene Citronellal against Some Weeds

Singh

Batish

Kaur

et al. 2006

Zeitschrift Für Naturforschung C

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“…The reduction of bean seed germination after treatments with eugenol was already reported (Asplund 1968;Reynolds 1987;Oosterhaven et al 1995), but the limited effect on bean seed germination observed at eugenol lower concentrations indicates a starting point for a possible amelioration of the disinfectant formulation and disinfection method. As already discussed, CBB is difficult to manage via the conventional methods.…”

Section: Fagioli DI Sarconi Seed Disinfectionmentioning

confidence: 76%

Development of Integrated Disease Control Measures for the Valorisation of Traditional Crops in Southern Italy: The Case Study of Fagioli di Sarconi

Cantore

Campion

Iacobellis

2015

The Sustainability of Agro-Food and Natural Resource Systems in the Mediterranean Basin

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The cultivation of Fagioli di Sarconi (FS), a pool of traditional varieties protected with the mark PGI (Protected Geographical Indication) cultivated in the National Park of Agri Valley in Basilicata (southern Italy), is limited by common bacterial blight (CBB), caused by the seed-borne bacterium Xanthomonas axonopodis pv. phaseoli (Xap) and X. a. pv. phaseoli var. fuscans (Xapf), whose control is difficult because of the lack of safe bactericides. Hence, studies were undertaken to assess the susceptibility/tolerance of selected varieties toward the pathogens and to develop eco-compatible measures for the disease management. Five FS varieties showed a differential response to inoculations with virulent strains of the pathogens, and hence, two tolerant cultivars were selected for the introgression of CBB resistance characters. Among the main active components of some essential oils, eugenol determined a highly significant reduction of Xap density on bean seeds, though at the higher dosage, the seed germination reduction was observed. These data indicate eugenol as potentially useful for bean seed disinfection from Xapf, though further studies appear necessary. Among 162 bacterial isolates from bean rhizosphere, six caused a clear reduction of lesions size ranging from 30 to 66 % suggesting that induced systemic resistance may be involved in that feature.

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“…Se han estudiado los cambios fisiológicos y bioquímicos producidos por la actividad alelopática de aceites esenciales (Asplund, 1968;Lorber y Muller, 1976;El-Deek y Dan Hess, 1986;Fischer, 1986Fischer, y 1991Koitabashi et al, 1997). La peroxidación lipídica, ampliamente reconocida como un evento toxicológico primario, es causado por la generación de radicales libres de diversas fuentes, incluyendo los hidroperóxidos orgánicos y reacciones de oxidación-reducción (Scrivanti et al, 2003).…”

Section: Discussionunclassified

“…Aunque ninguna característica estructural concreta de los monoterpenos es un factor crítico en la inhibición de la germinación, algunos de los compuestos más fitotóxicos contienen en su estructura oxígeno (carbonilos, carboxilos o alcoholes), mientras los compuestos menos fitotóxicos son hidrocarbonados (Vaughn y Spencer, 1993;Asplund, 1968). No obstante, las interacciones con monoterpenos hidrocarbonos cíclicos conducen a cambios en la estructura y la función de las membranas, lo que a su vez puede afectar al crecimiento y actividad de las células (Sikkema et al, 1995).…”

Section: Discussionunclassified

“…Evidencias de interacciones alelopáticas en la naturaleza causadas por plantas que contienen aleloquímicos volátiles han sido descritas frecuentemente (Sigmund, 1924;Went, 1942;Bonner, 1950;Asplund, 1968;Chou, 1986Chou, y 1989Muller, 1986;Reynolds, 1987;Dudai et al, 1999). La mayoría de los inhibidores de la germinación y el crecimiento producidos por las angiospermas perennes identificados por Rice (1984) son compuestos fenólicos o derivados del ácido cinámico.…”

Section: íNdice De Tablasunclassified

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Fitotoxicidad De Aceites Esenciales Y Extractos Acuosos De Plantas Mediterráneas Para El Control De Arvenses

Sancho¹,

Mercedes²

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Monoterpenes: relationship between structure and inhibition of germination

Cited by 90 publications

References 1 publication

Phytotoxicity of the Volatile Monoterpene Citronellal against Some Weeds

Phytotoxicity of the Volatile Monoterpene Citronellal against Some Weeds

Development of Integrated Disease Control Measures for the Valorisation of Traditional Crops in Southern Italy: The Case Study of Fagioli di Sarconi

Fitotoxicidad De Aceites Esenciales Y Extractos Acuosos De Plantas Mediterráneas Para El Control De Arvenses

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