Abstract
The paper continues multi-year integrated studies of the numerous taxons of tropical Begonia genus, which allowed us to evaluate the adaptive capacity of the representatives of this genus relying on the revealed morphological, rhythmological and biochemical features. The investigation of antimicrobial activity of intact plants and different fractions of plant extracts allowed us to distinguish several promising representatives of this genus exhibiting activity against a broad range of test microorganisms. The involvement of these plants within phytomodules in child care centers caused a substantial decrease in total microbial contamination of the air. The paper contains results of the experimental investigation of seasonal antimicrobial activity of 13 species, 8 hybrids. The phytoncide activity was measured by exposing the streak cultures of microbial test species bacteria Staphylococcus epidermidis, Esсherichia coli and yeast-like fungi Candida albicans to the volatile emissions of plants. It has been established that 95% of begonias are distinguished by the pronounced activity against S. epidermidis bacteria, 48% against E. coli bacteria and 43% against fungi Candida albicans. The seasonal specificity of the antimicrobial action of begonias was detected: the growth of the colonies of S. epidermidis bacteria is inhibited to the highest extent during spring and summer, at the phase of intense growth, while the activity against E. coli is the highest during autumn and winter at the phase of moderate growth. The taxons with clearly pronounced, long-term and universal antimicrobial action to the studied test objects were revealed and recommended for practical planting in various types of indoor environments. The data obtained in the study may serve as the basis for further investigation of the chemical composition of volatile exometabolites by the example of the representatives of Gireoudia and Coelocentrum sections that have exhibited high antimicrobial activity against S. epidermidis and E. coli.
Highlights
Введение Представители рода бегония (Begonia L.) составляют одну из крупных систематических коллекций в фондовых оранжереях Центрального сибирского ботанического сада СО РАН (ЦCБС)
us to evaluate the adaptive capacity of the representatives of this genus relying on the revealed morphological
The involvement of these plants within phytomodules in child care centers caused a substantial decrease in total microbial contamination of the air
Summary
СЕЗОННАЯ АНТИМИКРОБНАЯ АКТИВНОСТЬ ЛЕТУЧИХ ВЫДЕЛЕНИЙ ПРЕДСТАВИТЕЛЕЙ РОДА BEGONIA L. Изучение антимикробной активности интактных растений и различных фракций их экстрактов позволило выделить несколько перспективных представителей рода в отношении широкого спектра тестовых микроорганизмов. Оценка фитонцидной активности проведена с использованием метода «опарения» летучими соединениями листьев штриховых посевов микробных тест-культур – бактерий Staphylococcus epidermidis, Esсherichia coli и грибов Candida albicans. Установлено, что 95% бегоний отличаются выраженной активностью в отношении к бактериям S. epidermidis, 48% – к бактериям E. coli и 43% – к грибам Candida albicans. Полученные данные могут служить основой для дальнейшего исследования химического состава летучих экзометаболитов на примере представителей секций Gireoudia и Coelocentrum, показавших высокую антимикробную активность к S. epidermidis и E. coli. Ключевые слова: Begonia; тропические оранжерейные растения; летучие экзометаболиты растений; сезонная антимикробная активность; антимикробное воздействие; микробный тест-объект. Central Siberian Botanical Garden of Siberian Branch of the Russian Academy of Sciences (Novosibirsk, Russian Federation)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
