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article

Improving the predictions of leaf photosynthesis during and after short‐term heat stress with current rice models

Ting Sun, Xiaohu Zhang, Suyu Lv, Xuanhao Lin, more

Plant, Cell & Environment > 46 > 11 > 3353 - 3370

In response to increasing global warming, extreme heat stress significantly alters photosynthetic production. While numerous studies have investigated the temperature effects on photosynthesis, factors like vapour pressure deficit (VPD), leaf nitrogen, and feedback of sink limitation during and after extreme heat stress remain underexplored. This study assessed photosynthesis calculations in seven...

article

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

Yanira Estrada, Félix Plasencia, Ana Ortíz‐Atienza, Celia Faura, more

Plant, Cell & Environment > 46 > 11 > 3433 - 3444

Climate change exacerbates abiotic stresses like salinization, negatively impacting crop yield, so development of strategies, like using salt‐tolerant rootstocks, is crucial. The CALCINEURIN B‐LIKE 10 (SlCBL10) gene has been previously identified as a positive regulator of salt tolerance in the tomato shoot. Here, we report a different function of SlCBL10 in tomato shoot and root, as disruption of...

article

Dynamic gene regulatory networks improving spike fertility through regulation of floret primordia fate in wheat

Zhen Zhang, Wan Sun, Liangyun Wen, Yaqun Liu, more

Plant, Cell & Environment > 46 > 11 > 3628 - 3643

The developmental process of spike is critical for spike fertility through affecting floret primordia fate in wheat; however, the genetic regulation of this dynamic and complex developmental process remains unclear. Here, we conducted a high temporal‐resolution analysis of spike transcriptomes and monitored the number and morphology of floret primordia within spike. The development of all floret primordia...

article

UV‐B responses in the spotlight: Dynamic photoreceptor interplay and cell‐type specificity

Thomas Depaepe, Lucas Vanhaelewyn, Dominique Van Der Straeten

Plant, Cell & Environment > 46 > 11 > 3194 - 3205

Plants are constantly exposed to a multitude of external signals, including light. The information contained within the full spectrum of light is perceived by a battery of photoreceptors, each with specific and shared signalling outputs. Recently, it has become clear that UV‐B radiation is a vital component of the electromagnetic spectrum, guiding growth and being crucial for plant fitness. However,...

article

Abscisic acid acts essentially on stomata, not on the xylem, to improve drought resistance in tomato

Eduardo J. Haverroth, Leonardo A. Oliveira, Moab T. Andrade, Matthew Taggart, more

Plant, Cell & Environment > 46 > 11 > 3229 - 3241

Drought resistance is essential for plant production under water‐limiting environments. Abscisic acid (ABA) plays a critical role in stomata but its impact on hydraulic function beyond the stomata is far less studied. We selected genotypes differing in their ability to accumulate ABA to investigate its role in drought‐induced dysfunction. All genotypes exhibited similar leaf and stem embolism resistance...

article

A chitosan‐coated lentinan‐loaded calcium alginate hydrogel induces broad‐spectrum resistance to plant viruses by activating Nicotiana benthamiana calmodulin‐like (CML) protein 3

Shunyu Xiang, Jing Wang, Xiaoyan Wang, Xiaozhou Ma, more

Plant, Cell & Environment > 46 > 11 > 3592 - 3610

Control of plant virus diseases largely depends on the induced plant defence achieved by the external application of synthetic chemical inducers with the ability to modify defence‐signalling pathways. However, most of the molecular mechanisms underlying these chemical inducers remain unknown. Here, we developed a chitosan‐coated lentinan‐loaded hydrogel and discovered how it protects plants from different...

article

MtESN2 is a subgroup II sulphate transporter required for symbiotic nitrogen fixation and prevention of nodule early senescence in Medicago truncatula

Yanlin Ma, Weike Zhu, Weichen Zhao, Beihong Zhang, more

Plant, Cell & Environment > 46 > 11 > 3558 - 3574

Adequate distribution of mineral sulphur (S) nutrition to nodules mediated by sulphate transporters is crucial for nitrogen fixation in symbiosis establishment process. However, the molecular mechanisms underlying this process remain largely unknown. In this study, we characterized the function of Early Senescent Nodule 2 (MtESN2), a gene crucial to nitrogen fixation in Medicago truncatula. Mutations...

article

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

Bin Zheng, Yu‐Ting Li, Qiu‐Ping Wu, Wei Zhao, more

Plant, Cell & Environment > 46 > 11 > 3305 - 3322

In nature, plants are exposed to a dynamic light environment. Fluctuations in light decreased the photosynthetic light utilization efficiency (PLUE) of leaves, and much more severely in C₄ species than in C₃ species. However, little is known about the plasticity of PLUE under dynamic light in C₄ species. Present study focused on the influence of planting density to the photosynthesis under dynamic...

article

PhyB‐dependent phosphorylation of mitogen‐activated protein kinase cascade MKK2‐MPK2 positively regulates red light‐induced stomatal opening

Yuzhen Li, Shimiao Hui, Yaxin Yuan, Yahong Ye, more

Plant, Cell & Environment > 46 > 11 > 3323 - 3336

Red light induces stomatal opening by affecting photosynthesis, metabolism and triggering signal transductions in guard cells. Phytochrome B (phyB) plays a positive role in mediating red light‐induced stomatal opening. However, phyB‐mediated red light guard cell signalling is poorly understood. Here, we found that phyB‐mediated sequential phosphorylation of mitogen‐activated protein kinase kinase...

article

OnGuard3e: A predictive, ecophysiology‐ready tool for gas exchange and photosynthesis research

Thanh‐Hao Nguyen, Fernanda A. L. Silva‐Alvim, Adrian Hills, Michael R. Blatt

Plant, Cell & Environment > 46 > 11 > 3644 - 3658

Gas exchange across the stomatal pores of leaves is a focal point in studies of plant‐environmental relations. Stomata regulate atmospheric exchange with the inner air spaces of the leaf. They open to allow CO₂ entry for photosynthesis and close to minimize water loss. Models that focus on the phenomenology of stomatal conductance generally omit the mechanics of the guard cells that regulate the pore...

article

Natural variation of warm temperature‐induced raffinose accumulation identifies TREHALOSE‐6‐PHOSPHATE SYNTHASE 1 as a modulator of thermotolerance

Niklas Reichelt, Arthur Korte, Markus Krischke, Martin J. Mueller, more

Plant, Cell & Environment > 46 > 11 > 3392 - 3404

High‐temperature stress limits plant growth and reproduction. Exposure to high temperature, however, also elicits a physiological response, which protects plants from the damage evoked by heat. This response involves a partial reconfiguration of the metabolome including the accumulation of the trisaccharide raffinose. In this study, we explored the intraspecific variation of warm temperature‐induced...

article

Osmotic stress‐induced localisation switch of CBR1 from mitochondria to the endoplasmic reticulum triggers ATP production via β‐oxidation to respond to osmotic shock

Ruixue Xiao, Oh Youngjun, Xiuxiu Zhang, NguyenThO Nguyen Thi, more

Plant, Cell & Environment > 46 > 11 > 3420 - 3432

Drought and high salinity are major environmental factors that reduce plant growth and development, leading to loss of plant productivity in agriculture. Under these stress conditions, photosynthesis is greatly suppressed despite the high cellular energy cost of stress response processes. Currently, the process that allows plants to secure the energy required for osmotic stress responses remains elusive...

article

Increased uptake of deep soil water promotes drought resistance in mixed forests

Ziqiang Liu, Limin Ye, Jiang Jiang, Rilin Liu, more

Plant, Cell & Environment > 46 > 11 > 3218 - 3228

The intensity and frequency of droughts are projected to rise in recent years and adversely affect forests. Thus, information on plant water use and acclimation during and after droughts is crucial. This study used the stable isotope and thermal dissipation probes to detect the water‐use adaptation of mixed forests to drought using a precipitation gradient control experiment in the field. The results...

article

A genomic panel for studying C3‐C4 intermediate photosynthesis in the Brassiceae tribe

Ricardo Guerreiro, Venkata Suresh Bonthala, Urte Schlüter, Nam V. Hoang, more

Plant, Cell & Environment > 46 > 11 > 3611 - 3627

Research on C4 and C3‐C4 photosynthesis has attracted significant attention because the understanding of the genetic underpinnings of these traits will support the introduction of its characteristics into commercially relevant crop species. We used a panel of 19 taxa of 18 Brassiceae species with different photosynthesis characteristics (C3 and C3‐C4) with the following objectives: (i) create draft...

article

MicroRNA397 regulates tolerance to drought and fungal infection by regulating lignin deposition in chickpea root

Nilesh Kumar Sharma, Shalini Yadav, Santosh Kumar Gupta, Vadivelmurugan Irulappan, more

Plant, Cell & Environment > 46 > 11 > 3501 - 3517

Plants deposit lignin in the secondary cell wall as a common response to drought and pathogen attacks. Cell wall localised multicopper oxidase family enzymes LACCASES (LACs) catalyse the formation of monolignol radicals and facilitate lignin formation. We show an upregulation of the expression of several LAC genes and a downregulation of microRNA397 (CamiR397) in response to natural drought in chickpea...

article

The fungal metabolite 4‐hydroxyphenylacetic acid from Neofusicoccum parvum modulates defence responses in grapevine

Noemi Flubacher, Raymonde Baltenweck, Philippe Hugueney, Jochen Fischer, more

Plant, Cell & Environment > 46 > 11 > 3575 - 3591

In a consequence of global warming, grapevine trunk diseases (GTDs) have become a pertinent problem to viticulture, because endophytic fungi can turn necrotrophic upon host stress killing the plant. In Neofusicoccum parvum Bt‐67, plant‐derived ferulic acid makes the fungus release Fusicoccin aglycone triggering plant cell death. Now, we show that the absence of ferulic acid lets the fungus secrete...

article

Is winter coming? Impact of the changing climate on plant responses to cold temperature

Alvaro Santiago Larran, Alice Pajoro, Julia I. Qüesta

Plant, Cell & Environment > 46 > 11 > 3175 - 3193

Climate change is causing alterations in annual temperature regimes worldwide. Important aspects of this include the reduction of winter chilling temperatures as well as the occurrence of unpredicted frosts, both significantly affecting plant growth and yields. Recent studies advanced the knowledge of the mechanisms underlying cold responses and tolerance in the model plant Arabidopsis thaliana. However,...

article

Ferredoxin C2 is required for chlorophyll biosynthesis and accumulation of photosynthetic antennae in Arabidopsis

Marcela Davalos Tournaire, Lars B. Scharff, Manuela Kramer, Tatjana Goss, more

Plant, Cell & Environment > 46 > 11 > 3287 - 3304

Ferredoxins (Fd) are small iron‐sulphur proteins, with sub‐types that have evolved for specific redox functions. Ferredoxin C2 (FdC2) proteins are essential Fd homologues conserved in all photosynthetic organisms and a number of different FdC2 functions have been proposed in angiosperms. Here we use RNAi silencing in Arabidopsis thaliana to generate a viable fdC2 mutant line with near‐depleted FdC2...

article

The cysteine‐rich receptor‐like kinase CRK4 contributes to the different drought stress response between Columbia and Landsberg erecta

Min Zhao, Mengdan Li, Meng Huang, Chaochao Liang, more

Plant, Cell & Environment > 46 > 11 > 3258 - 3272

The natural variation between Arabidopsis (Arabidopsis thaliana) ecotypes Columbia (Col) and Landsberg erecta (Ler) strongly affects abscisic acid (ABA) signalling and drought tolerance. Here, we report that the cysteine‐rich receptor‐like protein kinase CRK4 is involved in regulating ABA signalling, which contributes to the differences in drought stress tolerance between Col‐0 and Ler‐0. Loss‐of‐function...

article

In situ characterisation of whole‐plant stomatal responses to VPD using leaf optical dendrometry

Ibrahim Bourbia, Christopher Lucani, Madeline R. Carins‐Murphy, Alistair Gracie, more

Plant, Cell & Environment > 46 > 11 > 3273 - 3286

Vapour pressure deficit (VPD) plays a crucial role in regulating plant carbon and water fluxes due to its influence on stomatal behaviour and transpiration. Yet, characterising stomatal responses of the whole plant to VPD remains challenging due to methodological limitations. Here, we develop a novel method for in situ assessment of whole‐plant stomatal responses (g_c) to VPD in the herbaceous plant...

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Improving the predictions of leaf photosynthesis during and after short‐term heat stress with current rice models

A novel function of the tomato CALCINEURIN‐B LIKE 10 gene as a root‐located negative regulator of salt stress

Dynamic gene regulatory networks improving spike fertility through regulation of floret primordia fate in wheat

UV‐B responses in the spotlight: Dynamic photoreceptor interplay and cell‐type specificity

Abscisic acid acts essentially on stomata, not on the xylem, to improve drought resistance in tomato

A chitosan‐coated lentinan‐loaded calcium alginate hydrogel induces broad‐spectrum resistance to plant viruses by activating Nicotiana benthamiana calmodulin‐like (CML) protein 3

MtESN2 is a subgroup II sulphate transporter required for symbiotic nitrogen fixation and prevention of nodule early senescence in Medicago truncatula

Maize (Zea mays L.) planted at higher density utilizes dynamic light more efficiently

PhyB‐dependent phosphorylation of mitogen‐activated protein kinase cascade MKK2‐MPK2 positively regulates red light‐induced stomatal opening

OnGuard3e: A predictive, ecophysiology‐ready tool for gas exchange and photosynthesis research

Natural variation of warm temperature‐induced raffinose accumulation identifies TREHALOSE‐6‐PHOSPHATE SYNTHASE 1 as a modulator of thermotolerance

Osmotic stress‐induced localisation switch of CBR1 from mitochondria to the endoplasmic reticulum triggers ATP production via β‐oxidation to respond to osmotic shock

Increased uptake of deep soil water promotes drought resistance in mixed forests

A genomic panel for studying C3‐C4 intermediate photosynthesis in the Brassiceae tribe

MicroRNA397 regulates tolerance to drought and fungal infection by regulating lignin deposition in chickpea root

The fungal metabolite 4‐hydroxyphenylacetic acid from Neofusicoccum parvum modulates defence responses in grapevine

Is winter coming? Impact of the changing climate on plant responses to cold temperature

Ferredoxin C2 is required for chlorophyll biosynthesis and accumulation of photosynthetic antennae in Arabidopsis

The cysteine‐rich receptor‐like kinase CRK4 contributes to the different drought stress response between Columbia and Landsberg erecta

In situ characterisation of whole‐plant stomatal responses to VPD using leaf optical dendrometry

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