Article
Plant Sciences
Rong Wang, Ruizhen Li, Lina Cheng, Xiaoyang Wang, Xin Fu, Xiufen Dong, Mingfang Qi, Caizhong Jiang, Tao Xu, Tianlai Li
Summary: Abscission of plant organs is controlled by various signals and environmental stimuli, involving multiple regulatory networks like auxin flux and ethylene production. Tonoplast intrinsic proteins play a crucial role in abscission by regulating H2O2 levels and water permeability. These proteins interact with cytoplasmic H2O2 and water influx to modulate the abscission process.
Article
Plant Sciences
Qinmi Xie, Hui Hou, Peixuan Yan, Haiying Zhang, Yingze Lv, Xuebin Li, Lin Chen, Danbo Pang, Yang Hu, Xilu Ni
Summary: Aerenchyma formation in Nelumbo nucifera root is an adaptive trait to the aquatic environment, which involves programmed cell death. The study found that exogenous oxygen and ethylene can affect aerenchyma formation and its area, with ethylene having a positive regulatory effect. On the other hand, the inhibitor 1-MCP partially inhibits aerenchyma occurrence.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Yunqing Yu, Getu Beyene, Justin Villmer, Keith E. Duncan, Hao Hu, Toni Johnson, Andrew N. Doust, Nigel J. Taylor, Elizabeth A. Kellogg
Summary: This study investigates the shattering mechanism in E. tef and finds that it differs significantly from other cereals, as it relies on programmed cell death and fracture of the cell walls. These findings lay the groundwork for understanding grain shattering in Eragrostis and improving shattering in E. tef.
Article
Plant Sciences
Chao Li, Xiangchi Zhang, Wenting Guo, Kaiyong Fu, Chunyan Li, Cheng Li
Summary: In this study, the hormone regulation of programmed cell death (PCD) in wheat endosperm cells during post-anthesis drought stress was investigated. The results showed that spraying cobalt nitrate (CN) increased endosperm cell viability, nucleus number and DNA content, leading to increased grain weight. In contrast, treating with fluridone (FU) decreased endosperm nucleus number and DNA content, resulting in decreased grain weight.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Review
Plant Sciences
Shazia Parveen, Foziya Altaf, Sumira Farooq, Mohammad Lateef Lone, Aehsan ul Haq, Inayatullah Tahir
Summary: Flower senescence is a complex process involving cytological, physiological, and molecular changes, similar to programmed cell death. Ethylene plays a crucial role in ethylene-dependent petal senescence, triggering various changes such as wilting, oxidative stress, protein and nucleic acid degradation, and autophagy. Despite advances in understanding the mechanism and regulation of petal senescence, there are still knowledge gaps that require critical evaluation of the available literature. A deeper understanding of ethylene-dependent senescence can lead to improved regulation of senescence timing and site, resulting in optimized crop yields, enhanced product quality, and extended longevity.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Biochemistry & Molecular Biology
Danmei Liu, Ting Guo, Jianing Li, Yuan Hao, Dan Zhao, Longdan Wang, Zhiqiang Liu, Liping Zhang, Zhuping Jin, Yanxi Pei
Summary: This study found that hydrogen sulfide inhibits the initiation of tomato pedicel abscission. Transcriptome analysis revealed that hydrogen sulfide strongly influences the global transcription of pedicel tissues and significantly affects both auxin and ethylene signaling pathways. Furthermore, hydrogen sulfide was found to reconstruct an auxin gradient along the pedicel and have an indirect inhibitory effect on the ethylene signaling pathway. In addition, the subtilisin-like proteinase family members were identified as critical components of the abscission signaling network downstream of auxin and ethylene.
Article
Agronomy
Xin Hu, Shaochun Liu, Xinxin Gao, Jiawen Guo, Rudan Li, Gaoyuan Liu
Summary: This study investigated sugarcane varieties with different spontaneous defoliation performances and found that shedding-prone varieties have fewer viable cells in the abscission zone and lower DNA integrity in the seventh leaf sheaths. Furthermore, the spontaneous defoliation rate is correlated with the number of viable cells and DNA damage.
Article
Plant Sciences
Ruifen Ren, Lingling Zhang, Xueru Jiang, Hao Zhou, Yan Liu
Summary: In this study, the effects of exogenous hydrogen peroxide (H2O2) on the endogenous ethylene synthetic pathway and programmed cell death (PCD) in Dendrobium nobile protocorm-like bodies (PLBs) were investigated. The results showed that exogenous H2O2 significantly reduced the cell survival rate, endogenous ACC content, and ACO and ACS enzyme activities of PLBs after cryopreservation.
ACTA PHYSIOLOGIAE PLANTARUM
(2023)
Article
Plant Sciences
Liqing Lu, Haijian Yang, Yanhui Xu, Li Zhang, Juxun Wu, Hualin Yi
Summary: This study used RNA-seq and Pacbio-seq technologies to analyze the transcriptome and plant hormone signals in citrus seed development, revealing the important roles of hormone signaling, cell division, and nutrient metabolism processes. Additionally, several genes, including CrWRKY74, were found to play critical roles in seed abortion.
Article
Biochemistry & Molecular Biology
Yiyun Lin, Michelle L. Jones
Summary: The study identified PhATG6 and PhPI3K as negative regulators of flower senescence, with nutrient limitation intensifying their effects on flower longevity and biomass. Additionally, the research shows that these autophagy genes potentially influence the transcriptional regulation of metacaspases and ethylene biosynthetic genes during petal senescence.
Review
Chemistry, Physical
Qi Meng, Binbin Ding, Ping'an Ma, Jun Lin
Summary: Programmed cell death (PCD) and immunogenic cell death (ICD) are important mechanisms in cancer therapy, and understanding their relationship is significant for tumor treatments. This review describes the interrelationship between PCD and ICD using nanomedicines as examples. It provides an overview of PCD patterns, explores the link between apoptosis and ICD, introduces non-apoptotic signaling pathways and their relationship with ICD, and summarizes the potential application of PCD and ICD in the development of new nanomaterials. The review aims to deepen understanding, extend biomedical applications, and promote progress in clinical tumor therapy.
Article
Plant Sciences
Ruizhen Li, Chun-Lin Shi, Xiaoyang Wang, Yan Meng, Lina Cheng, Caizhong Jiang, Mingfang Qi, Tao Xu, Tianlai Li
Summary: Research found that in tomato, low light-induced flower abscission is mediated by the peptide SlIDL6 controlled by IDA, and this process is achieved through an ethylene-independent pathway. Additionally, a regulatory module involving SlWRKY17-SlIDL6 was discovered to play a crucial role in the abscission process.
Article
Multidisciplinary Sciences
Arsheed H. Sheikh, Iosif Zacharia, Alonso J. Pardal, Ana Dominguez-Ferreras, Daniela J. Sueldo, Jung-Gun Kim, Alexi Balmuth, Jose R. Gutierrez, Brendon F. Conlan, Najeeb Ullah, Olivia M. Nippe, Anil M. Girija, Chih-Hang Wu, Guido Sessa, Alexandra M. E. Jones, Murray R. Grant, Miriam L. Gifford, Mary Beth Mudgett, John P. Rathjen, Vardis Ntoukakis
Summary: In both plants and animals, nucleotide-binding leucine-rich repeat (NLR) immune receptors play critical roles in pathogen recognition and activation of innate immunity. By studying the tomato Prf/Pto NLR resistance complex, the researchers identified the 14-3-3 proteins TFT1 and TFT3 as interacting partners of the NLR complex and the protein kinase MAPKKK alpha. They also found that the helper NRC proteins are integral components of the Prf/Pto NLR recognition complex. The study provides mechanistic insights into the activation of immune receptors and initiation of downstream signaling cascades.
NATURE COMMUNICATIONS
(2023)
Review
Plant Sciences
Katarina Soln, Marina Klemencic, Jasna Dolenc Koce
Summary: Allelopathy refers to the interaction between plants, where one plant releases compounds that negatively affect the fitness of another plant. These compounds induce cellular damage and death in the target plant. Understanding the mechanisms of allelopathy can contribute to improving crop production, managing plant invasions, and reducing chemical pollution.
Article
Plant Sciences
Yun Jiang, Zihang Shi, Wei Liu, Mingfang Qi, Tao Xu, Yuanhua Wu, Tianlai Li
Summary: This study discovered a subfamily F protein phosphatase, SlPP2C, which is associated with leaf senescence. The expression, protein accumulation, and promoter activity of SlPP2C increased gradually with the progression of leaf and flower senescence as well as fruit ripening in tomato. RNA interference of SlPP2C resulted in delayed senescence and ripening phenotypes in leaves, flowers, and fruits.
PHYSIOLOGIA PLANTARUM
(2023)
Review
Virology
Spela Baebler, Anna Coll, Kristina Gruden
Article
Agronomy
Tanja Mrak, Klemen Eler, Ovidiu Badea, Yasutomo Hoshika, Elisa Carrari, Elena Paoletti, Hojka Kraigher
Article
Ecology
Louis Paul Decena-Segarra, Lilijana Bizjak-Mali, Ales Kladnik, Stanley K. Sessions, Sean M. Rovito
AMERICAN NATURALIST
(2020)
Article
Plant Sciences
Tanja Mrak, Emira Hukic, Ines Straus, Tina Unuk Nahberger, Hojka Kraigher
Article
Plant Sciences
Tjasa Lukan, Marusa Pompe-Novak, Spela Baebler, Magda Tusek-Znidaric, Ales Kladnik, Maja Kriznik, Andrej Blejec, Maja Zagorscak, Katja Stare, Barbara Dusak, Anna Coll, Stephan Pollmann, Karolina Morgiewicz, Jacek Hennig, Kristina Gruden
Article
Forestry
Claudia Cocozza, Elena Paoletti, Tanja Mrak, Sasa Zavadlav, Tom Levanic, Hojka Kraigher, Alessio Giovannelli, Yasutomo Hoshika
Article
Plant Sciences
Ricardo Arraiano-Castilho, Martin Bidartondo, Tuula Niskanen, James J. Clarkson, Ivano Brunner, Stephan Zimmermann, Beatrice Senn-Irlet, Beat Frey, Ursula Peintner, Tanja Mrak, Laura M. Suz
Summary: Alpine habitats are highly vulnerable to environmental change, and plant-fungal interactions in these ecosystems, particularly in snowbed habitats, show higher specialisation and are more susceptible to environmental changes compared to other alpine habitats.
Review
Biology
Valentina Levak, Tjasa Lukan, Kristina Gruden, Anna Coll
Summary: Biosensors are crucial tools for understanding plant immunity, providing effective imaging for calcium and reactive oxygen species in plants. However, there is still room for improvement in imaging the main hormonal players in immune response. The most advanced genetically encoded biosensors have made it possible to monitor multiple analytes in the same chassis, showing great potential for applications in the field of crops.
Article
Biochemistry & Molecular Biology
Marina Dermastia, Blaz Skrlj, Rebeka Strah, Barbara Anzic, Spela Tomaz, Maja Kriznik, Christina Schoenhuber, Monika Riedle-Bauer, Ziva Ramsak, Marko Petek, Ales Kladnik, Nada Lavrac, Kristina Gruden, Thomas Roitsch, Gunter Brader, Marusa Pompe-Novak
Summary: This research utilized RNA-Seq and sRNA-Seq data analysis to uncover new signaling pathways related to grapevine infection with 'Ca. P. solani', highlighting the importance of hormonal balance disruption and differential expression of small RNAs in phytoplasma disease development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Forestry
Tanja Mrak, Natalija Dovc, Jozica Gricar, Yasutomo Hoshika, Elena Paoletti, Hojka Kraigher
Summary: Elevated O-3, particularly in interaction with N and/or P levels, induced tissue- and cell type-specific changes in the anatomical structure of poplar roots. The effects of O-3 in combination with N and P on anatomical structure and hydraulic properties were investigated, revealing complex interactions between these factors. Elevated O-3 suppressed the effects of N and P on vessel grouping and size, indicating a need for further research on carbon-saving mechanisms in response to environmental stressors.
TREES-STRUCTURE AND FUNCTION
(2021)
Article
Plant Sciences
Blaz Skrlj, Marusa Pompe Novak, Guenter Brader, Barbara Anzic, Ziva Ramsak, Kristina Gruden, Jan Kralj, Ales Kladnik, Nada Lavrac, Thomas Roitsch, Marina Dermastia
Summary: This study explored using network analysis to understand the temporal dynamics of bois noir associated with 'Candidatus Phytoplasma solani', one of the most widespread phytoplasma diseases in European grapevines. A methodology was proposed to explore temporal network dynamics at the community level, offering insights into functional dynamics through enrichment analysis and community degradation. Validation with experimental data confirmed known gene communities and revealed new potential regulatory networks not previously linked to 'Ca. P. solani'. Selected predictions were empirically evaluated to confirm the method's capabilities.
Article
Forestry
Tina Unuk Nahberger, Tine Grebenc, Daniel Zlindra, Tanja Mrak, Matevz Likar, Hojka Kraigher, Zlata Luthar
Summary: This study analyzed the suitability of common and Tartary buckwheat wastes as media for raising seedlings. Results showed that Tartary buckwheat bran had a higher concentration of antioxidants compared to other buckwheat waste. Adding Tartary buckwheat husks had a positive effect on root parameters but a negative effect on branching density. Both added buckwheat husks and Tartary buckwheat bran negatively affected summer truffle mycorrhization level.
Article
Plant Sciences
Natasa Mehle, Sanda Kavcic, Sara Mermal, Sara Vidmar, Marusa Pompe Novak, Monika Riedle-Bauer, Guenter Brader, Ales Kladnik, Marina Dermastia
Summary: This study conducted multiple genotyping of the tuf, secY, stamp, and vmp1 genes of the causative agent of grapevine yellows disease, 'Candidatus Phytoplasma solani', and found that the tuf-b2 type of the tuf gene has been present in eastern Slovenia since at least 2003. The hypotheses that the occurrence of different haplotypes varies due to geographical position and that the haplotypes are similar between Slovenia and Austrian Styria were confirmed. The data also indicate changes in haplotypes related to host plants and insect vectors associated with 'Ca. P. solani', possibly due to new epidemiological cycles and environmental changes.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Tanja Mrak, Benjamin Grasic, Peter Prislan, Jozica Gricar, Ziga Laznik, Grega E. Voglar
Summary: The study investigated the effects of soil contamination and root herbivory on root surface area and stem anatomical properties in young common beech plants. The results showed that soil contamination significantly reduced root surface area, mean ring width, vessel radial diameter, and potential stem conductivity. However, it increased vessel density, vessel grouping index, and mean group size of grouped cells. Late exposure to root herbivory did not induce significant changes in root surface area or stem anatomy.
ACTA PHYSIOLOGIAE PLANTARUM
(2023)
Article
Plant Sciences
Simona Strgulc Krajsek, Ales Kladnik, Sara Skocir, Martina Bacic
Summary: The research focused on the seed germination of two alien plant species, Phytolacca americana and P. acinosa, in Europe. Both species were found to have different levels of invasive success, with P. americana exhibiting better germination and fruit ripening on cut plants compared to P. acinosa. The study suggests that removing all fruiting plants from the eradication site is crucial regardless of the fruit development stage.
