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1. A double EPSPS gene mutation endowing glyphosate resistance shows a remarkably high resistance cost

Author:
Han, Heping; Vila‐Aiub, Martin M.; Jalaludin, Adam; Yu, Qin; Powles, Stephen B.
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3031-3042
ISSN:
0140-7791
Subject:
3-phosphoshikimate 1-carboxyvinyltransferase; Eleusine indica; alleles; crops; glyphosate; herbicide resistance; homozygosity; metabolites; point mutation; rice; shikimate pathway; weeds
Abstract:
... A novel glyphosate resistance double point mutation (T102I/P106S, TIPS) in the 5‐enolpyruvylshikimate‐3‐phosphate synthase (EPSPS) gene has been recently identified for the first time only in the weed species Eleusine indica. Quantification of plant resistance cost associated with the TIPS and the often reported glyphosate resistance single P106S mutation was performed. A significant resistance co ...
DOI:
10.1111/pce.13067

2. A novel family of transcription factors conserved in angiosperms is required for ABA signalling

Author:
Tian, Hainan; Chen, Siyu; Yang, Wenting; Wang, Tianya; Zheng, Kaijie; Wang, Yating; Cheng, Yuxin; Zhang, Na; Liu, Shanda; Li, Dongqiu; Liu, Bao; Wang, Shucai
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2958-2971
ISSN:
0140-7791
Subject:
Arabidopsis; DNA-binding domains; abscisic acid; biosynthesis; drought; gene expression; mutants; plant response; promoter regions; protein kinases; protoplasts; receptors; reporter genes; reverse transcriptase polymerase chain reaction; transcription factors; transgenic plants
Abstract:
... The plant hormone abscisic acid (ABA) plays a crucial role in regulating plant responses to environmental stresses. Interplay of several different proteins including the PYR/PYL/RCAR receptors, A‐group PP2C protein phosphatases, SnRK2 protein kinases, and downstream transcription factors regulates ABA signalling. We report here the identification of a family of ABA‐induced transcription repressors ...
DOI:
10.1111/pce.13058

3. Combined transcriptomic and proteomic analysis constructs a new model for light‐induced anthocyanin biosynthesis in eggplant (Solanum melongena L.)

Author:
Li, Jing; Ren, Li; Gao, Zhen; Jiang, Mingmin; Liu, Yang; Zhou, Lu; He, Yongjun; Chen, Huoying
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3069-3087
ISSN:
0140-7791
Subject:
RNA; Solanum melongena; anthocyanins; biosynthesis; correlation; cultivars; eggplants; environmental factors; genes; liquid chromatography; models; photoreceptors; protein synthesis; proteomics; tandem mass spectrometry; transcription (genetics); transcription factors; transcriptomics; translation (genetics)
Abstract:
... Light is a key environmental factor affecting anthocyanin biosynthesis. Our previous study demonstrated that “Lanshan Hexian” is a light‐sensitive eggplant cultivar, but its regulatory mechanism is unknown. Here, delphinidin‐3‐[4‐(cis‐p‐coumaroyl)‐rhamnosyl‐glucopyranoside]‐5‐glucopyranoside and delphinidin‐3‐[4‐(trans‐p‐coumaroyl)‐rhamnosyl‐glucopyranoside]‐5‐glucopyranoside were identified as th ...
DOI:
10.1111/pce.13074

4. Complex bud architecture and cell‐specific chemical patterns enable supercooling of Picea abies bud primordia

Author:
Kuprian, Edith; Munkler, Caspar; Resnyak, Anna; Zimmermann, Sonja; Tuong, Tan D.; Gierlinger, Notburga; Müller, Thomas; Livingston, David P., III; Neuner, Gilbert
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3101-3112
ISSN:
0140-7791
Subject:
Picea abies; cell walls; ice; image analysis; intercellular spaces; mass spectrometry; microscopy; pith; proteins; supercooling; temperature; thermography; water potential
Abstract:
... Bud primordia of Picea abies, despite a frozen shoot, stay ice free down to −50 °C by a mechanism termed supercooling whose biophysical and biochemical requirements are poorly understood. Bud architecture was assessed by 3D—reconstruction, supercooling and freezing patterns by infrared video thermography, freeze dehydration and extraorgan freezing by water potential measurements, and cell‐specific ...
DOI:
10.1111/pce.13078

5. Connecting salt stress signalling pathways with salinity‐induced changes in mitochondrial metabolic processes in C3 plants

Author:
Che‐Othman, M. Hafiz; Millar, A. Harvey; Taylor, Nicolas L.
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2875-2905
ISSN:
0140-7791
Subject:
C3 plants; crop yield; enzymes; lung function; metabolites; mitochondria; mitochondrial membrane; photosynthesis; plant growth; saline soils; salinity; salt stress; signal transduction; transpiration; transporters; tricarboxylic acid cycle
Abstract:
... Salinity exerts a severe detrimental effect on crop yields globally. Growth of plants in saline soils results in physiological stress, which disrupts the essential biochemical processes of respiration, photosynthesis, and transpiration. Understanding the molecular responses of plants exposed to salinity stress can inform future strategies to reduce agricultural losses due to salinity; however, it ...
DOI:
10.1111/pce.13034

6. Cytosolic glyceraldehyde‐3‐phosphate dehydrogenases play crucial roles in controlling cold‐induced sweetening and apical dominance of potato (Solanum tuberosum L.) tubers

Author:
Liu, Tengfei; Fang, Hui; Liu, Jun; Reid, Stephen; Hou, Juan; Zhou, Tingting; Tian, Zhendong; Song, Botao; Xie, Conghua
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3043-3054
ISSN:
0140-7791
Subject:
RNA interference; Solanum tuberosum; apical dominance; cell death; energy; gene expression; genes; glyceraldehyde 3-phosphate; glyceraldehyde-3-phosphate dehydrogenase; glycolysis; meristems; metabolites; potatoes; reducing sugars; sucrose; tubers
Abstract:
... Glyceraldehyde‐3‐phosphate dehydrogenase (GAPDH) is an important enzyme that functions in producing energy and supplying intermediates for cellular metabolism. Recent researches indicate that GAPDHs have multiple functions beside glycolysis. However, little information is available for functions of GAPDHs in potato. Here, we identified 4 putative cytosolic GAPDH genes in potato genome and demonstr ...
DOI:
10.1111/pce.13073

7. Differences in osmotic adjustment, foliar abscisic acid dynamics, and stomatal regulation between an isohydric and anisohydric woody angiosperm during drought

Author:
Nolan, Rachael H.; Tarin, Tonantzin; Santini, Nadia S.; McAdam, Scott A.M.; Ruman, Rizwana; Eamus, Derek
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3122-3134
ISSN:
0140-7791
Subject:
Acacia; Eucalyptus camaldulensis; Gymnospermae; abscisic acid; belowground biomass; carbohydrates; drought; dry matter partitioning; drying; embolism; plasticity; root shoot ratio; sapwood; stomatal conductance; stomatal movement; turgor; water potential
Abstract:
... Species are often classified along a continuum from isohydric to anisohydric, with isohydric species exhibiting tighter regulation of leaf water potential through stomatal closure in response to drought. We investigated plasticity in stomatal regulation in an isohydric (Eucalyptus camaldulensis) and an anisohydric (Acacia aptaneura) angiosperm species subject to repeated drying cycles. We also ass ...
DOI:
10.1111/pce.13077

8. Elevated ozone reduces photosynthetic carbon gain by accelerating leaf senescence of inbred and hybrid maize in a genotype‐specific manner

Author:
Yendrek, Craig R.; Erice, Gorka; Montes, Christopher M.; Tomaz, Tiago; Sorgini, Crystal A.; Brown, Patrick J.; McIntyre, Lauren M.; Leakey, Andrew D.B.; Ainsworth, Elizabeth A.
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3088-3100
ISSN:
0140-7791
Subject:
Zea mays; carbon; carbon dioxide; corn; crops; filling period; free air carbon dioxide enrichment; gas exchange; genetic variation; genotype; hybrids; inbred lines; leaves; models; ozone; photosynthesis; troposphere
Abstract:
... Exposure to elevated tropospheric ozone concentration ([O₃]) accelerates leaf senescence in many C₃ crops. However, the effects of elevated [O₃] on C₄ crops including maize (Zea mays L.) are poorly understood in terms of physiological mechanism and genetic variation in sensitivity. Using free air gas concentration enrichment, we investigated the photosynthetic response of 18 diverse maize inbred a ...
DOI:
10.1111/pce.13075

9. Exploring how viruses enhance plants' resilience to drought and the limits to this form of viral payback

Author:
Carr, John Peter
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2906-2908
ISSN:
0140-7791
Subject:
drought; plant diseases and disorders; plant viruses; salicylic acid; virulence; viruses
Abstract:
... This article comments on: Virulence determines beneficial trade‐offs in the response of virus‐infected plants to drought via induction of salicylic acid ...
DOI:
10.1111/pce.13068

10. HISTONE DEACETYLASE 6 represses pathogen defence responses in Arabidopsis thaliana

Author:
Wang, Yizhong; Hu, Qin; Wu, Zhenjiang; Wang, Hui; Han, Shiming; Jin, Ye; Zhou, Jin; Zhang, Zhengfeng; Jiang, Jiafu; Shen, Yun; Shi, Huazhong; Yang, Wannian
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2972-2986
ISSN:
0140-7791
Subject:
Arabidopsis thaliana; acetylation; alleles; defense mechanisms; energy; gene expression regulation; growth retardation; histone deacetylase; histones; mutants; pathogens; screening
Abstract:
... Plant defence mechanisms are suppressed in the absence of pathogen attack to prevent wasted energy and growth inhibition. However, how defence responses are repressed is not well understood. Histone deacetylase 6 (HDA6) is a negative regulator of gene expression, and its role in pathogen defence response in plants is not known. In this study, a novel allele of hda6 (designated as shi5) with sponta ...
DOI:
10.1111/pce.13047

11. In situ temperature relationships of biochemical and stomatal controls of photosynthesis in four lowland tropical tree species

Author:
Slot, Martijn; Winter, Klaus
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3055-3068
ISSN:
0140-7791
Subject:
Calophyllum; carbon; leaves; models; photosynthesis; stomatal conductance; temperature; trees; tropical forests; tropical plants; vapor pressure; Panama
Abstract:
... Net photosynthetic carbon uptake of Panamanian lowland tropical forest species is typically optimal at 30–32 °C. The processes responsible for the decrease in photosynthesis at higher temperatures are not fully understood for tropical trees. We determined temperature responses of maximum rates of RuBP‐carboxylation (VCMₐₓ) and RuBP‐regeneration (JMₐₓ), stomatal conductance (Gₛ), and respiration in ...
DOI:
10.1111/pce.13071

12. Nitric oxide is essential for the development of aerenchyma in wheat roots under hypoxic stress

Author:
Wany, Aakanksha; Kumari, Aprajita; Gupta, Kapuganti Jagadis
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3002-3017
ISSN:
0140-7791
Subject:
1-aminocyclopropane-1-carboxylate synthase; DNA fragmentation; aerenchyma; aminocyclopropanecarboxylate oxidase; anaerobic conditions; cell death; cytoplasmic streaming; endo-1,4-beta-glucanase; enzyme activity; ethylene; flooded conditions; genes; hypoxia; inositols; lipid peroxidation; nitrate reductase; nitric oxide; oxygen; phospholipase C; potassium; protein kinases; roots; signal transduction; tyrosine; wheat
Abstract:
... In response to flooding/waterlogging, plants develop various anatomical changes including the formation of lysigenous aerenchyma for the delivery of oxygen to roots. Under hypoxia, plants produce high levels of nitric oxide (NO) but the role of this molecule in plant‐adaptive response to hypoxia is not known. Here, we investigated whether ethylene‐induced aerenchyma requires hypoxia‐induced NO. Un ...
DOI:
10.1111/pce.13061

13. Not changes in membrane fluidity but proteotoxic stress triggers heat shock protein expression in Chlamydomonas reinhardtii

Author:
Rütgers, Mark; Muranaka, Ligia Segatto; Schulz‐Raffelt, Miriam; Thoms, Sylvia; Schurig, Juliane; Willmund, Felix; Schroda, Michael
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2987-3001
ISSN:
0140-7791
Subject:
Chlamydomonas reinhardtii; benzyl alcohol; dimethyl sulfoxide; heat shock proteins; heat stress; lipids; membrane fluidity; models; plasma membrane; temperature; unfolded protein response
Abstract:
... A conserved reaction of all organisms exposed to heat stress is an increased expression of heat shock proteins (HSPs). Several studies have proposed that HSP expression in heat‐stressed plant cells is triggered by an increased fluidity of the plasma membrane. Among the main lines of evidence in support of this model are as follows: (a) the degree of membrane lipid saturation was higher in cells gr ...
DOI:
10.1111/pce.13060

14. Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds

Author:
Arana, María Verónica; Tognacca, Rocío Soledad; Estravis‐Barcalá, Maximiliano; Sánchez, Rodolfo Augusto; Botto, Javier Francisco
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3113-3121
ISSN:
0140-7791
Subject:
Arabidopsis thaliana; alleles; circadian clocks; phytochrome; plant establishment; red light; seed dormancy; seed germination; seeds; synergism; temperature
Abstract:
... The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a re ...
DOI:
10.1111/pce.13076

15. Roots‐eye view: Using microdialysis and microCT to non‐destructively map root nutrient depletion and accumulation zones

Author:
Brackin, Richard; Atkinson, Brian S.; Sturrock, Craig J.; Rasmussen, Amanda
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3135-3142
ISSN:
0140-7791
Subject:
ammonium; fertilizer application; greenhouse gas emissions; image analysis; micro-computed tomography; microdialysis; nitrates; nutrient availability; nutrient uptake; nutrients; nutritive value; pollution; roots; runoff; soil; sustainable agriculture
Abstract:
... Improvement in fertilizer use efficiency is a key aspect for achieving sustainable agriculture in order to minimize costs, greenhouse gas emissions, and pollution from nutrient run‐off. To optimize root architecture for nutrient uptake and efficiency, we need to understand what the roots encounter in their environment. Traditional methods of nutrient sampling, such as salt extractions can only be ...
DOI:
10.1111/pce.13072

16. Soil CO2 venting as one of the mechanisms for tolerance of Zn deficiency by rice in flooded soils

Author:
Affholder, Marie‐Cecile; Weiss, Dominik J.; Wissuwa, Matthias; Johnson‐Beebout, Sarah E.; Kirk, Guy J.D.
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 3018-3030
ISSN:
0140-7791
Subject:
Oryza sativa; aerenchyma; carbon dioxide; field experimentation; genotype; ligands; nutrient deficiencies; nutrients; pH; paddy soils; plant density; rhizosphere; rice; soil organic matter; soil solution; solubilization; zinc
Abstract:
... We sought to explain rice (Oryza sativa) genotype differences in tolerance of zinc (Zn) deficiency in flooded paddy soils and the counter‐intuitive observation, made in earlier field experiments, that Zn uptake per plant increases with increasing planting density. We grew tolerant and intolerant genotypes in a Zn‐deficient flooded soil at high and low planting densities and found (a) plant Zn conc ...
DOI:
10.1111/pce.13069

17. Specialized stomatal humidity responses underpin ecological diversity in C3 bromeliads

Author:
Males, Jamie; Griffiths, Howard
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2931-2945
ISSN:
0140-7791
Subject:
Bromeliaceae; C3 plants; ecophysiology; epiphytes; evolution; humidity; niches; photosynthesis; stomatal conductance; stomatal movement; vapor pressure; water use efficiency
Abstract:
... The Neotropical Bromeliaceae display an extraordinary level of ecological variety, with species differing widely in habit, photosynthetic pathway and growth form. Divergences in stomatal structure and function, hitherto understudied in treatments of bromeliad evolutionary physiology, could have been critical to the generation of variety in ecophysiological strategies among the bromeliads. Because ...
DOI:
10.1111/pce.13024

18. The impact of modifying photosystem antenna size on canopy photosynthetic efficiency—Development of a new canopy photosynthesis model scaling from metabolism to canopy level processes

Author:
Song, Qingfeng; Wang, Yu; Qu, Mingnan; Ort, Donald R.; Zhu, Xin‐Guang
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2946-2957
ISSN:
0140-7791
Subject:
C3 photosynthesis; algorithms; biomass production; canopy; chlorophyll; crop yield; leaves; nitrogen; nutrient use efficiency; photosystem II; plant breeding; simulation models
Abstract:
... Canopy photosynthesis (Ac) describes photosynthesis of an entire crop field and the daily and seasonal integrals of Ac positively correlate with daily and seasonal biomass production. Much effort in crop breeding has focused on improving canopy architecture and hence light distribution inside the canopy. Here, we develop a new integrated canopy photosynthesis model including canopy architecture, a ...
DOI:
10.1111/pce.13041

19. Virulence determines beneficial trade‐offs in the response of virus‐infected plants to drought via induction of salicylic acid

Author:
Aguilar, Emmanuel; Cutrona, Carmen; del Toro, Francisco J.; Vallarino, José G.; Osorio, Sonia; Pérez‐Bueno, María Luisa; Barón, Matilde; Chung, Bong‐Nam; Canto, Tomás; Tenllado, Francisco
Source:
Plant, cell and environment 2017 v.40 no.12 pp. 2909-2930
ISSN:
0140-7791
Subject:
Arabidopsis thaliana; Nicotiana benthamiana; Plum pox virus; Potato virus X; correlation; drought; drought tolerance; metabolites; phenotype; plant diseases and disorders; plant viruses; progeny; salicylic acid; synergism; transpiration; virulence; viruses
Abstract:
... It has been hypothesized that plants can get beneficial trade‐offs from viral infections when grown under drought conditions. However, experimental support for a positive correlation between virus‐induced drought tolerance and increased host fitness is scarce. We investigated whether increased virulence exhibited by the synergistic interaction involving Potato virus X (PVX) and Plum pox virus (PPV ...
DOI:
10.1111/pce.13028

20. Airborne signals from Trichoderma fungi stimulate iron uptake responses in roots resulting in priming of jasmonic acid‐dependent defences in shoots of Arabidopsis thaliana and Solanum lycopersicum

Author:
Martínez‐Medina, Ainhoa; Van Wees, Saskia C.M.; Pieterse, Corné M.J.
Source:
Plant, cell and environment 2017 v.40 no.11 pp. 2691-2705
ISSN:
0140-7791
Subject:
Arabidopsis thaliana; Botrytis cinerea; Solanum lycopersicum; Trichoderma asperellum; Trichoderma harzianum; elicitors; fungi; homeostasis; immunity; iron; leaves; mechanism of action; nutrient deficiencies; rhizosphere bacteria; roots; rootstocks; scions; seedlings; shoots; systemic acquired resistance; tomatoes; transcription (genetics); transcription factors; uptake mechanisms; volatile compounds
Abstract:
... Root colonization by Trichoderma fungi can trigger induced systemic resistance (ISR). In Arabidopsis, Trichoderma‐ISR relies on the transcription factor MYB72, which plays a dual role in the onset of ISR and the activation of Fe uptake responses. Volatile compounds (VCs) from rhizobacteria are important elicitors of MYB72 in Arabidopsis roots. Here, we investigated the mode of action of VCs from T ...
DOI:
10.1111/pce.13016