Article
Plant Sciences
Patricia Carvalho da Silva, Walter Quadros Ribeiro Junior, Maria Lucrecia Gerosa Ramos, Omar Cruz Rocha, Adriano Delly Veiga, Nathalia Henriques Silva, Lemerson de Oliveira Brasileiro, Charles Cardoso Santana, Guilherme Filgueiras Soares, Juaci Vitoria Malaquias, Christina Cleo Vinson
Summary: This study evaluated the responses of arabica coffee genotypes in the Brazilian Cerrado region to different levels and durations of water deficit. The results showed that plants under full irrigation conditions had higher gas exchange and relative water content, while rainfed and water deficit treatments led to reduced physiological and productive potential.
Article
Forestry
Xiao Chen, Na Li, Chenlu Liu, Hongtao Wang, Yuxing Li, Yuanmei Xie, Fengwang Ma, Jiakai Liang, Cuiying Li
Summary: Exogenous GABA improved the resistance of apple seedlings to long-term drought stress by enhancing GABA shunt and secondary cell wall biosynthesis.
Article
Optics
David A. Collazos-Burbano, Edith A. Tellez-Guzman, Joao Ealo, Mayo Villagran-Muniz, Crescencio Garcia-Segundo
Summary: This work presents a practical approach combining experimental and theoretical analyses to assess water evaporation in Arabica coffee leaves. By using optical reflectance spectroscopy and mass loss measurements, the changing water content of the leaves is continuously examined, and a relationship between the current water content and the dielectric function is established.
Article
Horticulture
Nisreen A. AL-Quraan, Zakaria Al-Ajlouni, Nima F. Qawasma
Summary: The study showed that drought stress significantly affects seed germination, plant growth, chlorophyll content, GABA shunt metabolites level, total protein and carbohydrate contents, and MDA level in green pea seedlings. It was found that there is a threshold value of 20% soil water holding capacity for normal germination after 14 days. Additionally, severe and long-term drought stress should be avoided during the germination stage to ensure proper seedling growth and metabolism.
Article
Agronomy
Marina Scalioni Vilela, Dalyse Toledo Castanheira, Rubens Jose Guimaraes, Milene Alves de Figueiredo Carvalho, Tiago Teruel Rezende, Giovani Belutti Voltolini, Mauro Magalhaes Leite Faria, Alisson Andre Vicente Campos
Summary: Sustainable cropping systems can enhance the growth and development of young coffee plants under drought conditions. Using soil cover and organic conditioners can improve agronomic performance and soil moisture of coffee plants.
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
(2023)
Article
Engineering, Chemical
Chia-Fang Tsai, Irvan Prawira Julius Jioe
Summary: This experiment analyzed the relationship between the color of coffee beans of different roasting degrees and sources and the caffeine and chlorogenic acid content. The results showed that increased roasting degree led to higher caffeine content but lower chlorogenic acid content. Additionally, there was a correlation between the color of coffee beans and both caffeine and chlorogenic acid content.
Article
Plant Sciences
Joyce Alves Goulart da Silva, Mario Lucio Vilela de Resende, Ingridy Simone Ribeiro, Adriene Ribeiro Lima, Luiz Roberto Marques Albuquerque, Ana Cristina Andrade Monteiro, Matheus Henrique Brito Pereira, Deila Magna dos Santos Botelho
Summary: This study compared the chemical composition and antioxidant activity of leaf extracts from a partially resistant coffee cultivar and a susceptible cultivar to bacterial halo blight. The partially resistant cultivar showed higher content of phenolic compounds and flavonoids, as well as higher antioxidant activity.
Article
Microbiology
Valerie Laroute, Roberto Mazzoli, Pascal Loubiere, Enrica Pessione, Muriel Cocaign-Bousquet
Summary: GABA production in bacteria is not directly correlated with osmolarity, with chloride ions playing a significant role in enhancing GABA yield under acidic stress conditions, while sulfate ions do not have the same effect. This study highlights the potential of L. lactis strains for intensive production of GABA as a bioactive molecule.
Article
Agronomy
Donghuan Li, Depeng Zhang, Zizhao Zhang, Yimei Xing, Na Sun, Shuo Wang, Hua Cai
Summary: Spraying alfalfa seedlings with exogenous GABA can improve their alkali tolerance. Exogenous GABA increases chlorophyll and soluble sugar content, reduces the accumulation of harmful substances like malondialdehyde and hydrogen peroxide, and enhances the activity of antioxidant enzymes.
Article
Chemistry, Applied
Xiujing Yin, Song Liu, Yukun Qin, Ronge Xing, Kecheng Li, Chunlin Yu, Xiaolin Chen, Pengcheng Li
Summary: A novel chitooligosaccharide grafted with beta-aminobutyric acid, COS-BABA, was successfully synthesized and shown to have better drought resistance-inducing activity compared to raw materials. COS-BABA induces drought resistance by activating signaling pathways related to nucleic acid metabolism and protein synthesis, enhancing photosynthesis in plants.
CARBOHYDRATE POLYMERS
(2021)
Article
Agronomy
Nassima Lassouane, Fatiha Aid, Muriel Quinet, Stanley Lutts
Summary: Acacia arabica is resistant to water stress at the seedling stage and able to recover after stress relief. Recovery induces a specific physiological status in terms of transpiration rates and management of oxidative stress in relation to flavonols and hydroxybenzoic acids concentrations.
Article
Plant Sciences
Emily Pappo, Chris Wilson, S. Luke Flory
Summary: Anthropogenic climate change is expected to negatively impact global agriculture, emphasizing the importance of selecting resilient coffee cultivars for maintaining crop production. Results from an experiment in Costa Rica suggest that cultivar selection can enhance coffee plant responses to precipitation changes, increasing fruit production and biomass.
Review
Nutrition & Dietetics
David J. Nutt, Robin J. Tyacke, Meg Spriggs, Vanessa Jacoby, Alan D. Borthwick, Delia Belelli
Summary: Alcohol consumption is associated with health harms and governments worldwide are trying to reduce them. One approach is to reduce alcohol consumption, leading to the development of non-alcoholic drinks. However, non-alcoholic drinks do not provide the social interaction that alcohol does. Therefore, the alternative approach is to develop functional drinks that mimic the positive effects of alcohol without the harms.
Article
Neurosciences
Anouk Marsman, Anna Lind, Esben Thade Petersen, Mads Andersen, Vincent Oltman Boer
Summary: GABA and GSH play crucial roles in brain functioning and are involved in various neurodegenerative and psychiatric diseases. MRS is a unique non-invasive method to measure these neurometabolites, but motion stabilization is important, especially for specific patient groups. Spectral editing techniques are typically used for unambiguous detection of GABA and GSH, although they increase motion sensitivity.
Review
Immunology
Yu Shan, Jianan Zhao, Yixin Zheng, Shicheng Guo, Steven J. Schrodi, Dongyi He
Summary: Rheumatoid arthritis (RA) is a disabling autoimmune disease with a complex pathological process. The GABAergic system in the nervous system may have immunomodulatory effects and regulate abnormal pain response in RA patients.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Mandi Yahyazadeh, Rieke Meinen, Robert Haensch, Sara Abouzeid, Dirk Selmar
Article
Biochemistry & Molecular Biology
Tahani Hijazin, Alzahraa Radwan, Sara Abouzeid, Gerald Draeger, Dirk Selmar
Article
Biochemistry & Molecular Biology
Sara Abouzeid, Ulrike Beutling, Dirk Selmar
Article
Environmental Sciences
Dirk Selmar, Carina Wittke, Iris Beck-von Wolffersdorff, Bernhard Klier, Laura Lewerenz, Maik Kleinwaechter, Melanie Nowak
ENVIRONMENTAL POLLUTION
(2019)
Article
Agriculture, Multidisciplinary
Dirk Selmar, Alzahraa Radwan, Tahani Hijazin, Sara Abouzeid, Mandi Yahyazadeh, Laura Lewerenz, Maik Kleinwaechter, Melanie Nowak
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2019)
Article
Biochemistry & Molecular Biology
Sara Abouzeid, Tahani Hijazin, Laura Lewerenz, Robert Haensch, Dirk Selmar
Article
Biochemistry & Molecular Biology
Laura Lewerenz, Tahani Hijazin, Sara Abouzeid, Robert Haensch, Dirk Selmar
Article
Agronomy
Tahani Hijazin, Alzahraa Radwan, Laura Lewerenz, Sara Abouzeid, Dirk Selmar
Article
Biochemistry & Molecular Biology
Mahdi Yahyazadeh, Gerold Jerz, Peter Winterhalter, Dirk Selmar
Summary: Medicinal plants grown under stress conditions exhibit higher concentrations of specialized metabolites, potentially due to enhanced biosynthesis, although stress also reduces biomass gain. Study on Catharanthus roseus plants showed that alkaloid concentrations were markedly higher under drought stress, but overall alkaloid content per plant increased only in the first two weeks. High salt concentrations did not affect alkaloid concentrations but significantly decreased total alkaloid content, suggesting that both increased biosynthesis and reduced biomass contribute to stress-related concentration increase.
Review
Plant Sciences
Boas Pucker, Dirk Selmar
Summary: Flavonoids are a diverse group of specialized metabolites derived from phenylalanine in plants. While the biosynthesis and decoration steps of flavonoids are well characterized, the subcellular transport mechanisms and species-specific decoration steps are still not fully understood.
Review
Plant Sciences
Laura Lewerenz, Sara Abouzeid, Mahdi Yahyazadeh, Tahani Hijazin, Dirk Selmar
Summary: This article discusses the phenomenon of Horizontal Natural Product Transfer and its importance in understanding plant-plant interactions. It reveals that specialized metabolites, such as alkaloids and phenolic compounds, can be transferred from donor plants to acceptor plants. This finding contributes to our understanding of allelopathic effects and the evolution of plant interactions.
Article
Plant Sciences
Fardous F. El-Senduny, Abdullah A. Elgazar, Heba Allah Alwasify, Alaa Abed, Mohamed Foda, Sara Abouzeid, Laura Lewerenz, Dirk Selmar, Farid Badria
Summary: The modulation of biosynthetic pathways by stimulating stress-induced responses in plants has been proven to be an effective way to diversify known natural products. In this study, the effect of methyl jasmonate (MeJA) on Vinca minor alkaloids distribution was investigated, and three compounds were successfully isolated and subjected to bioassays. The extracts and compounds showed antimicrobial and cytotoxic activities, as well as potential wound healing effects through the TGF-beta pathway. The expression of markers related to this pathway and wound healing was assessed, and molecular docking provided insights into the binding ability of the compounds with different active sites in mTOR.
Article
Plant Sciences
Laura Lewerenz, Heinrich Heinrichs, Johann Hornbacher, Jutta Papenbrock, Binh Nguyen-Thanh, Dirk Selmar
JOURNAL OF APPLIED BOTANY AND FOOD QUALITY
(2020)
Article
Plant Sciences
Dirk Selmar
JOURNAL OF APPLIED BOTANY AND FOOD QUALITY
(2020)
Article
Plant Sciences
Dirk Selmar, Maik Kleinwaechter
JOURNAL OF APPLIED BOTANY AND FOOD QUALITY
(2019)