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The transcription factor HSFA7b controls thermomemory at the shoot apical meristem by regulating ethylene biosynthesis and signaling in Arabidopsis

2000年

作者： john Paul mueller

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Plant Communications 2024年第3期5卷 47-61页

作者： Sheeba john Federico Apelt Amit Kumar Ivan FAcosta Dominik Bents Maria Grazia Annunziata Franziska Fichtner Caroline Gutjahr Bernd mueller-Roeber Justyna J.Olas University of Potsdam Institute of Biochemistry and BiologyKarl-Liebknecht-Straße 24-25Haus 2014476 PotsdamGermany Max Planck Institute of Molecular Plant Physiology Am Muehlenberg 114476 PotsdamGermany Laboratory of Molecular Biology Wageningen University6700 AP Wageningenthe Netherlands Center of Plant Systems Biology and Biotechnology(CPSBB) 14 St.Knyaz Boris 1 Pokrastitel Str.4023 PlovdivBulgaria Present address:Institute of Plant Biochemistry Heinrich Heine University DusseldorfUniversit€atsstr.140225 DusseldorfGermany Leibniz Institute of Vegetable and Ornamental Crops Theodor-Echtermeyer-Weg 114979 GroßbeerenGermany

The shoot apical meristem(SAM)is responsible for overall shoot growth by generating all aboveground *** research has revealed that the SAM displays an autonomous heat stress(HS)memory of a previous non-lethal HS *** the importance of the SAM for plant growth,it is essential to determine how its thermomemory is mechanistically ***,we report that HEAT SHOCK TRAN-SCRIPTION FACTOR A7b(HSFA7b)plays a crucial role in this process in Arabidopsis,as the absence of functional HSFA7b results in the temporal suppression of SAM activity after *** found that HSFA7b directly regulates ethylene response at the SAM by binding to the promoter of the key ethylene signaling gene ETHYLENE-INSENSITIVE 3 to establish ***,we demonstrated that HSFA7b regulates the expression of ETHYLENE OVERPRODUCER 1(ETO1)and ETO1-LIKE 1,both of which encode ethylene biosynthesis repressors,thereby ensuring ethylene homeostasis at the *** together,these results reveal a crucial and tissue-specic role for HSFA7b in thermomemory at the Arabidopsis SAM.

关键词： ethylene response heat stress adaptation shoot apical meristem SAM thermopriming thermomemory

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Influence of Tillage and Deep Rooted Cool Season Cover Crops on Soil Properties, Pests, and Yield Responses in Cotton

作者： (美)Mark Minasi (美)Rhonda Layfield (美)john Paul mueller

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Open Journal of Soil Science 2016年第10期6卷 149-158页

作者： Michael W. Marshall Phillip Williams Ali Mirzakhani Nafchi Joe Mario Maja Jose Payero john mueller Ahmad Khalilian Edisto Research & Education Center (Edisto REC) Clemson University Blackville SC USA Department of Agricultural and Environmental Sciences Clemson University Clemson SC USA

Soil compaction is a significant problem in the Southeastern USA. This compacted zone or hardpan limits root penetration below this layer and reduces potential yield and makes plants more susceptible to drought induced stresses. Soil compaction in this region is managed using costly annual deep tillage at or before planting and there is a great interest in reducing and/or eliminating annual tillage operations to lower production costs. Deep rooted cool season cover crops can penetrate this compacted soil zone and create channels, which cash crop roots, such as cotton, could follow to capture moisture and nutrients stored in the subsoil. The cool season cover crop roots would reduce the need for annual deep tillage prior to planting, increases soil organic matter, which provides greater water infiltration and available water holding capacity. Field studies were conducted for two years with three different soil series to determine the effects of tillage systems and cool season cover crops on the soil chemical and physical properties, yield responses, and pest pressure. Results showed that cool season cover crops significantly reduced soil compaction, increased cotton lint yield and soil moisture content, reduced nematode population densities, and increased soil available P, K, Mn, and organic matter content compared to the conventional no-cover crop.

关键词： Cover Crop Cotton Soil Compaction Nematodes Soil Water Content Tillage

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作者： (美)约翰·保罗·穆勒(john Paul mueller)

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人工智能初学者指南

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Primary carbohydrate metabolism genes participate in heat-stress memory at the shoot apical meristem of Arabidopsis thaliana

作者： (美)约翰·保罗·穆勒(john Paul mueller)，(法)卢卡·马萨罗(Luca Massaron)

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Molecular Plant 2024年第4期17卷 676-676页

作者： Justyna Jadwiga Olas Federico Apelt Maria Grazia Annunziata Sheeba john Sarah Isabel Richard Saurabh Gupta Friedrich Kragler Salma Balazadeh Bernd mueller-Roeber 不详

(Molecular Plant 14,1508-1524,September 62021)After the original publication of the above article,attentive readers identified errors in Figure 4H that needed correction as *** 4H contained the erroneous labels“10 DAP(7 DAT),”which should have each read,“7 DAP(4 DAT).”To avoid any confusion and ensure consistency across our figures,we modified some of the Col-0 images in a corrected version of Figure 4H below to resemble the exact same Col-0 images as in Figure *** details of the changes are as follows:rotation(Col-0 Primed,all timepoints;Col-0 Triggered,3 DAP and 5 DAP;Col-0 Primed/triggered,3 DAP and 5 DAP),replacement(Col-0 Triggered,7 DAP),and different cropping(Col-0 Primed/triggered,7 DAP).

关键词： Figure metabolism Prime

An experimental study of rotational pressure loss in rotor-stator gap

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Propulsion and Power Research 2017年第2期6卷 147-156页

作者： Yew Chuan Chong Dave A.Staton Markus A.mueller john Chick Motor Design Limited 4 Scotland Street.Ellesmere SY12 OEGUnited Kingdom Institute for Energy Systems School of Engineering.University of EdinburghThe King's BuildingsEdinburgh EH93DWUnited Kingdom

The annular gap between rotor and stator is an inevitable flow path of a throughflow ventilated electrical machine,but the flow entering the rotor-stator gap is subjected to the effects of *** pressure loss and volumetric flow rate across the rotor-stator gap were measured and compared between rotating and stationary *** experimental measurements found that the flow entering the rotor-stator gap is affected by an additional pressure *** the present study,the rotational pressure loss at the entrance of rotor-stator gap is *** upon dimensional analysis,the coefficient of entrance loss can be correlated with a dimensionless parameter,*** *** investigation leads to an original correlation for the entrance loss coefficient of rotor-stator gap arisen from the Coriolis and centrifugal effects in rotating reference frame.

关键词： Pressure drop Flow network analysis Rotating machinery Rotational pressure drop Rotor-stator gap Annular gap Electrical machines

Primary carbohydrate metabolism genes participate in heat-stress memory at the shoot apical meristem of Arabidopsis thaliana

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Molecular Plant 2021年第9期14卷 1508-1524页

作者： Justyna Jadwiga Olas Federico Apelt Maria Grazia Annunziata Sheeba john Sarah Isabel Richard Saurabh Gupta Friedrich Kragler Salma Balazadeh Bernd mueller-Roeber University of Potsdam Institute of Biochemistry and BiologyKarl-Liebknecht-Straße 24-25Haus 2014476 PotsdamGermany Max Planck Institute of Molecular Plant Physiology Am Muehlenberg 114476 PotsdamGermany Present address:Leiden University PO Box 95002300 RA Leidenthe Netherlands

In plants, the shoot apical meristem (SAM) is essential for the growth of aboveground organs. However, little is known about its molecular responses to abiotic stresses. Here, we show that the SAM of Arabidopsis thaliana displays an autonomous heat-stress (HS) memory of a previous non-lethal HS, allowing the SAM to regain growth after exposure to an otherwise lethal HS several days later. Using RNA sequencing, we identified genes participating in establishing the SAM's HS transcriptional memory, including the stem cell (SC) regulators CLAVATA1 (CLV1) and CLV3, HEAT SHOCK PROTEIN 17.6A (HSP17.6A), and the primary carbohydrate metabolism gene FRUCTOSE-BISPHOSPHATE ALDOLASE 6 (FBA6). We demonstrate that sugar availability is essential for survival of plants at high temperature. HEAT SHOCK TRANSCRIPTION FACTOR A2 (HSFA2A) directly regulates the expression of HSP17.6A and FBA6 by binding to the heat-shock elements in their promoters, indicating that HSFA2 is required for transcriptional activation of SAM memory genes. Collectively, these findings indicate that plants have evolved a sophisticated protection mechanism to maintain SCs and, hence, their capacity to re-initiate shoot growth after stress release.

关键词： aldolase carbon metabolism heat stress shoot apical meristem thermomemory thermopriming

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