TY - JOUR ID - 388 TI - Induction of a new lipoxygenase form in cucumber leaves by salicylic acid or 2,6-dichloroisonicotinic acid JO - Bot. Acta PY - 1997 SP - 101-108 AU - Feussner, I. AU - Fritz, I.G. AU - Hause, B. AU - Ullrich, W.R. AU - Wasternack, C. VL - 110 UR - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1438-8677/issues DO - 10.1111/j.1438-8677.1997.tb00616.x AB - Changes in lipoxygenase (LOX) protein pattern and/or activity were investigated in relation to acquired resistance of cucumber (Cucumis sativus L.) leaves against two powdery mildews, Sphaerotheca fuliginea (Schlecht) Salmon and Erysiphe cichoracearum DC et Merat. Acquired resistance was established by spraying leaves with salicylic acid (SA) or 2,6-dichloroisonicotinic acid (INA) and estimated in whole plants by infested leaf area compared to control plants. SA was more effective than INA. According to Western blots, untreated cucumber leaves contained a 97 kDa LOX form, which remained unchanged for up to 48 h after pathogen inoculation. Upon treatment with SA alone for 24 h or with INA plus pathogen, an additional 95 kDa LOX form appeared which had an isoelectric point in the alkaline range. For the induction of this form, a threshold concentration of 1 mM SA was required, higher SA concentrations did not change LOX-95 expression which remained similar between 24 h and 96 h but further increased upon mildew inoculation. Phloem exudates contained only the LOX-97 form, in intercellular washing fluid no LOX was detected. dichloroisonicotinic localization revealed LOX protein in the cytosol of the mesophyll cells without differences between the forms. A2 - C1 - Molecular Signal Processing; Cell and Metabolic Biology ER - TY - CHAP ID - 457 TI - Jasmonates and octadecanoids: Signals in plant stress responses and development T2 - Progress in Nucleic Acid Research and Molecular Biology PB - PY - 2002 SP - 165-221 AU - Wasternack, C. AU - Hause, B. VL - 72 UR - DO - 10.1016/S0079-6603(02)72070-9 AB - A2 - Moldave, K. C1 - Molecular Signal Processing; Cell and Metabolic Biology ER - TY - CHAP ID - 1499 TI - Chronobiologische Phänomene und Jasmonatgehalt bei Viscum album L. T2 - Die Mistel in der Tumortherapie 2. Aktueller Stand der Forschung und klinische Anwendung PB - PY - 2009 SP - 49-56 AU - Dorka, R. AU - Miersch, O. AU - Hause, B. AU - Weik, P. AU - Wasternack, C. VL - UR - SN - 978-3-933351-82 AB - A2 - Scheer, R.; Bauer, R.; Bekker, A.; Berg, P. A.; Fintelmann, V. C1 - Molecular Signal Processing ER - TY - CHAP ID - 1618 TI - Jasmonates in plant growth and stress responses. T2 - Phytohormones: a window to metabolism, signaling and biotechnological applications. PB - PY - 2014 SP - 221-264 AU - Wasternack, C. VL - Springer UR - http://www.springer.com/de/book/9781493904907 SN - 978-1-4939-0490-7 (hardcover) 978-1-4939-4814-7 (softcover) DO - 10.1007/978-1-4939-0491-4_8 AB - Abiotic and biotic stresses adversely affect plant growth and productivity. The phytohormones regulate key physiological events under normal and stressful conditions for plant development. Accumulative research efforts have discovered important roles of phytohormones and their interactions in regulation of plant adaptation to numerous stressors. Intensive molecular studies have elucidated various plant hormonal pathways; each of which consist of many signaling components that link a specific hormone perception to the regulation of downstream genes. Signal transduction pathways of auxin, abscisic acid, cytokinins, gibberellins and ethylene have been thoroughly investigated. More recently, emerging signaling pathways of brassinosteroids, jasmonates, salicylic acid and strigolactones offer an exciting gateway for understanding their multiple roles in plant physiological processes.At the molecular level, phytohormonal crosstalks can be antagonistic or synergistic or additive in actions. Additionally, the signal transduction component(s) of one hormonal pathway may interplay with the signaling component(s) of other hormonal pathway(s). Together these and other research findings have revolutionized the concept of phytohormonal studies in plants. Importantly, genetic engineering now enables plant biologists to manipulate the signaling pathways of plant hormones for development of crop varieties with improved yield and stress tolerance.This book, written by internationally recognized scholars from various countries, represents the state-of-the-art understanding of plant hormones’ biology, signal transduction and implications. Aimed at a wide range of readers, including researchers, students, teachers and many others who have interests in this flourishing research field, every section is concluded with biotechnological strategies to modulate hormone contents or signal transduction pathways and crosstalk that enable us to develop crops in a sustainable manner. Given the important physiological implications of plant hormones in stressful environments, our book is finalized with chapters on phytohormonal crosstalks under abiotic and biotic stresses. A2 - Tran, L.-S.; Pal, S. C1 - Molecular Signal Processing ER - TY - CHAP ID - 1928 TI - Jasmonates: Synthesis, Metabolism, Signal Transduction and Action T2 - eLS PB - PY - 2016 SP - AU - Wasternack, C. VL - UR - https://dx.doi.org/10.1002/9780470015902.a0020138.pub2 SN - ISBN 978-0-4700-1590-2 DO - 10.1002/9780470015902.a0020138.pub2 AB - Jasmonic acid and other fatty-acid-derived compounds called oxylipins are signals in stress responses and development of plants. The receptor complex, signal transduction components as well as repressors and activators in jasmonate-induced gene expression have been elucidated. Different regulatory levels and cross-talk with other hormones are responsible for the multiplicity of plant responses to environmental and developmental cues. A2 - C1 - Molecular Signal Processing ER - TY - JOUR ID - 2183 TI - A Bypass in Jasmonate Biosynthesis – the OPR3-independent Formation JO - Trends Plant Sci PY - 2018 SP - 276-279 AU - Wasternack, C. AU - Hause, B. VL - 23 UR - https://www.sciencedirect.com/science/article/pii/S1360138518300426 DO - 10.1016/j.tplants.2018.02.011 AB - For the first time in 25 years, a new pathway for biosynthesis of jasmonic acid (JA) has been identified. JA production takes place via 12-oxo-phytodienoic acid (OPDA) including reduction by OPDA reductases (OPRs). A loss-of-function allele, opr3-3, revealed an OPR3-independent pathway converting OPDA to JA. A2 - C1 - Molecular Signal Processing; Cell and Metabolic Biology ER - TY - JOUR ID - 2275 TI - New Light on Local and Systemic Wound Signaling JO - Trends Plant Sci PY - 2019 SP - 102-105 AU - Wasternack, C. VL - 24 UR - https://dx.doi.org/10.1016/j.tplants.2018.11.009 DO - 10.1016/j.tplants.2018.11.009 AB - Electric signaling and Ca2+ waves were discussed to occur in systemic wound responses. Two new overlapping scenarios were identified: (i) membrane depolarization in two special cell types followed by an increase in systemic cytoplasmic Ca2+ concentration ([Ca2+]cyt), and (ii) glutamate sensed by GLUTAMATE RECEPTOR LIKE proteins and followed by Ca2+-based defense in distal leaves. A2 - C1 - Molecular Signal Processing ER - TY - JOUR ID - 2440 TI - Termination in Jasmonate Signaling by MYC2 and MTBs JO - Trends Plant Sci PY - 2019 SP - 667-669 AU - Wasternack, C. VL - 24 UR - https://dx.doi.org/10.1016/j.tplants.2019.06.001 DO - 10.1016/j.tplants.2019.06.001 AB - Jasmonic acid (JA) signaling can be switched off by metabolism of JA. The master regulator MYC2, interacting with MED25, has been shown to be deactivated by the bHLH transcription factors MTB1, MTB2, and MTB3. An autoregulatory negative feedback loop has been proposed for this termination in JA signaling. A2 - C1 - Molecular Signal Processing ER -