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Journal : Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences

AT3 (Acyltransferase) Gene Isolated From Capsicum frutescens cv. Cakra Hijau Habibi, Mohamad; Manggabarani, Andi Madhihah; Sulasmi, Eko Sri; Listyorini, Dwi
Journal of Tropical Life Science Vol 3, No 2 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

Chili pepper is widely used and cultivated by Indonesian people. There are three species of chili pepper, i.e.: Capsicum annuum L., Capsicum frutescens L., and Capsicum violaceum HBK. Capsicum frutescens L. has a higher economic value due to its pungency and carotenoid content. C. frutescens has several cultivars, one of those is Capsicum frutescens cv. Cakra Hijau. This cultivar is resistant against pest and disease and has very high pungency. This special character of chili pepper is born by its secondary metabolic, Capsaicin. Moreover, capsaicin also serves as defense mechanism, antiarthritis, analgesic, and anticancer. This study aimed to isolate Acyltransferase (AT3) gene which encoding Capsaicin Synthase (CS) enzyme. AT3 gene was isolated through PCR using forward primer 5-ATG GCT TTT GCA TTA CCA TCA-3 and reverse primer 5-CCT TCA CAA TTA TTC GCC CA-3. Data were analyzed using DNA Baser, BLAST, and ClustalX. This study has successfully isolated 404 bp fragments of AT3 gene. This fragments located at 1918-1434 bp referred to AT3 gene from Capsicum frutescens cv. Shuanla. Isolation of upstream and downstream fragments of AT3 gene from Capsicum frutescens cv. Cakra Hijau is undergoing.
Pollen Morphology and Sucrose Giving on Stigma Relation with Incompability of Sweetpotato (Ipomoea batatas (L.) L.) Susanto, Febri Adi; Sulasmi, Eko Sri; Rahayuningsih, St A
Journal of Tropical Life Science Vol 3, No 3 (2013)
Publisher : Journal of Tropical Life Science

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Abstract

The purpose of the research is to examine how to increase cross and self-pollination by solving incompatibility of sweet potato mechanism through sucrose giving on stigma and pollen nuclei checking. Sucrose in different concentration is giving to stigma. Stigma is excised and lubricated with sucrose before crossing and the pedicel is lubricated with 2,4D 100 ppm in lanolin. The result shows both varieties have stigma position longer than the anthers do. Papua Solosa has 94.7% anther dehiscence, 70.25% pollen viability, while MSU 03028-10 has 87.3% anther dehiscence and 87.84% pollen viability. Both of these varieties have receptive stigma. Sucrose level in compatible pollination is lower than in incompatible pollination. Sugar in 50 ppm concentrate can increase fruit setting in self-pollination of Papua Solosa variety from 0% to 70%, 0% to 60% in MSU 03028-10, and 10% to 90% in crossing of Papua Solosa>Keywords : Pollen Morphology, Sucrose Giving, Incompatibility of Sweet Potato
AT3 (Acyltransferase) Gene Isolated From Capsicum frutescens cv. Cakra Hijau Mohamad Habibi; Andi Madhihah Manggabarani; Eko Sri Sulasmi; Dwi Listyorini
Journal of Tropical Life Science Vol. 3 No. 2 (2013)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Chili pepper is widely used and cultivated by Indonesian people. There are three species of chili pepper, i.e.: Capsicum annuum L., Capsicum frutescens L., and Capsicum violaceum HBK. Capsicum frutescens L. has a higher economic value due to its pungency and carotenoid content. C. frutescens has several cultivars, one of those is Capsicum frutescens cv. Cakra Hijau. This cultivar is resistant against pest and disease and has very high pungency. This special character of chili pepper is born by its secondary metabolic, Capsaicin. Moreover, capsaicin also serves as defense mechanism, antiarthritis, analgesic, and anticancer. This study aimed to isolate Acyltransferase (AT3) gene which encoding Capsaicin Synthase (CS) enzyme. AT3 gene was isolated through PCR using forward primer 5-ATG GCT TTT GCA TTA CCA TCA-3 and reverse primer 5-CCT TCA CAA TTA TTC GCC CA-3. Data were analyzed using DNA Baser, BLAST, and ClustalX. This study has successfully isolated 404 bp fragments of AT3 gene. This fragments located at 1918-1434 bp referred to AT3 gene from Capsicum frutescens cv. Shuanla. Isolation of upstream and downstream fragments of AT3 gene from Capsicum frutescens cv. Cakra Hijau is undergoing.
Pollen Morphology and Sucrose Giving on Stigma Relation with Incompability of Sweetpotato (Ipomoea batatas (L.) L.) Febri Adi Susanto; Eko Sri Sulasmi; St A Rahayuningsih
Journal of Tropical Life Science Vol. 3 No. 3 (2013)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of the research is to examine how to increase cross and self-pollination by solving incompatibility of sweet potato mechanism through sucrose giving on stigma and pollen nuclei checking. Sucrose in different concentration is giving to stigma. Stigma is excised and lubricated with sucrose before crossing and the pedicel is lubricated with 2,4D 100 ppm in lanolin. The result shows both varieties have stigma position longer than the anthers do. Papua Solosa has 94.7% anther dehiscence, 70.25% pollen viability, while MSU 03028-10 has 87.3% anther dehiscence and 87.84% pollen viability. Both of these varieties have receptive stigma. Sucrose level in compatible pollination is lower than in incompatible pollination. Sugar in 50 ppm concentrate can increase fruit setting in self-pollination of Papua Solosa variety from 0% to 70%, 0% to 60% in MSU 03028-10, and 10% to 90% in crossing of Papua Solosa>Keywords : Pollen Morphology, Sucrose Giving, Incompatibility of Sweet Potato