Common and specific responses to iron and phosphorus deficiencies in roots of apple tree (Malus × domestica)

Valentinuzzi, Fabio; Venuti, Silvia; Pii, Youry; Marroni, Fabio; Cesco, Stefano; Hartmann, Felix; Mimmo, Tanja; Morgante, Michèle; Pinton, Roberto; Tomasi, Nicola; Zanin, Laura

doi:10.1007/s11103-019-00896-w

Cited by 16 publications

(14 citation statements)

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“…Concerning chlorophyll content, a significant increase in both plant species grown under P starvation has been recorded, is particularly pronounced in cucumber leaves manifesting a particular dark green color. A similar trend has also been described in strawberry and apple plants (Valentinuzzi et al, 2015 , 2019 ; Delaporte-Quintana et al, 2017 ). Moreover, a more severe or prolonged P deficiency may result in the accumulation of anthocyanins, consequently increasing the pigmentation of the newest leaves and chlorophyll concentrations (Veazie et al, 2020 ).…”

Section: Discussionsupporting

confidence: 81%

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

et al. 2021

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Phosphorus (P) is an essential nutrient for plants. The use of plant growth-promoting bacteria (PGPB) may also improve plant development and enhance nutrient availability, thus providing a promising alternative or supplement to chemical fertilizers. This study aimed to evaluate the effectiveness of Enterobacter sp. strain 15S in improving the growth and P acquisition of maize (monocot) and cucumber (dicot) plants under P-deficient hydroponic conditions, either by itself or by solubilizing an external source of inorganic phosphate (Pi) [Ca3(PO4)2]. The inoculation with Enterobacter 15S elicited different effects on the root architecture and biomass of cucumber and maize depending on the P supply. Under sufficient P, the bacterium induced a positive effect on the whole root system architecture of both plants. However, under P deficiency, the bacterium in combination with Ca3(PO4)2 induced a more remarkable effect on cucumber, while the bacterium alone was better in improving the root system of maize compared to non-inoculated plants. In P-deficient plants, bacterial inoculation also led to a chlorophyll content [soil-plant analysis development (SPAD) index] like that in P-sufficient plants (p < 0.05). Regarding P nutrition, the ionomic analysis indicated that inoculation with Enterobacter 15S increased the allocation of P in roots (+31%) and shoots (+53%) of cucumber plants grown in a P-free nutrient solution (NS) supplemented with the external insoluble phosphate, whereas maize plants inoculated with the bacterium alone showed a higher content of P only in roots (36%) but not in shoots. Furthermore, in P-deficient cucumber plants, all Pi transporter genes (CsPT1.3, CsPT1.4, CsPT1.9, and Cucsa383630.1) were upregulated by the bacterium inoculation, whereas, in P-deficient maize plants, the expression of ZmPT1 and ZmPT5 was downregulated by the bacterial inoculation. Taken together, these results suggest that, in its interaction with P-deficient cucumber plants, Enterobacter strain 15S might have solubilized the Ca3(PO4)2 to help the plants overcome P deficiency, while the association of maize plants with the bacterium might have triggered a different mechanism affecting plant metabolism. Thus, the mechanisms by which Enterobacter 15S improves plant growth and P nutrition are dependent on crop and nutrient status.

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Section: Discussionsupporting

confidence: 81%

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

et al. 2021

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“…Pi and Fe interacted in an antagonistic manner to regulate the growth of rice shoots (Zheng et al, 2009). An antagonistic interaction between Fe and Pi contents was previously reported in crop species and apple trees (Zheng et al, 2009;Zanin et al, 2017;Valentinuzzi et al, 2019). The results of experiments on Pi-and Fe-treated Arabidopsis seedlings indicated that the availability of Fe affected the response of lateral roots to Pi deficiency (Rai et al, 2015).…”

Section: Fe Availability Affects Pi Uptake and Homeostasis In Plantsmentioning

confidence: 73%

Cross-Talks Between Macro- and Micronutrient Uptake and Signaling in Plants

et al. 2021

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In nature, land plants as sessile organisms are faced with multiple nutrient stresses that often occur simultaneously in soil. Nitrogen (N), phosphorus (P), sulfur (S), zinc (Zn), and iron (Fe) are five of the essential nutrients that affect plant growth and health. Although these minerals are relatively inaccessible to plants due to their low solubility and relative immobilization, plants have adopted coping mechanisms for survival under multiple nutrient stress conditions. The double interactions between N, Pi, S, Zn, and Fe have long been recognized in plants at the physiological level. However, the molecular mechanisms and signaling pathways underlying these cross-talks in plants remain poorly understood. This review preliminarily examined recent progress and current knowledge of the biochemical and physiological interactions between macro- and micro-mineral nutrients in plants and aimed to focus on the cross-talks between N, Pi, S, Zn, and Fe uptake and homeostasis in plants. More importantly, we further reviewed current studies on the molecular mechanisms underlying the cross-talks between N, Pi, S, Zn, and Fe homeostasis to better understand how these nutrient interactions affect the mineral uptake and signaling in plants. This review serves as a basis for further studies on multiple nutrient stress signaling in plants. Overall, the development of an integrative study of multiple nutrient signaling cross-talks in plants will be of important biological significance and crucial to sustainable agriculture.

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“…The treatments of Apple Stem Grooving Virus (ASGV) infected iron and phosphorus deficiencies are commonly biological and abiotic stresses in plant development [ 40 ]. The expression of 24 GABA signal pathway genes has no significant difference in these treatments.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the expression of 24 GABA signal pathway gene involving the growth and developmental process of apple were investigated use the website (http://bioinformatics.cau.edu.cn/AppleMDO, 15th, November, 2020) [39]. Meanwhile, the GABA signal pathway gene, which responded to several biological and abiotic stresses, was investigated in a previous study [40]. The result (Figure 6 and Table S4) showed that most of GABA signal pathway gene has no significant expression during the fruit development process, except for MdGAD1 and MdGAD4.…”

Section: Expression Profiles Of Gaba Pathway Genes In Different Tissues Development Biological and Abiotic Stressmentioning

confidence: 99%

“…In view of the above results, we indicated that the GABA signal pathway gene plays a core role in floral organ, fruit and buds development, especially of the GAD and GABA-T gene family. The treatments of Apple Stem Grooving Virus (ASGV) infected iron and phosphorus deficiencies are commonly biological and abiotic stresses in plant development [40]. The expression of 24 GABA signal pathway genes has no significant difference in these treat ments.…”

Section: Expression Profiles Of Gaba Pathway Genes In Different Tissues Development Biological and Abiotic Stressmentioning

confidence: 99%

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Comprehensive Genome-Wide Identification and Transcript Profiling of GABA Pathway Gene Family in Apple (Malus domestica)

Zheng

Wang

et al. 2021

Genes

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γ-Aminobutyric Acid (GABA), a four-carbon non-protein amino acid, is a significant component of the free amino acid pool in most prokaryotic and eukaryotic organisms. GABA is involved in pH regulation, maintaining C/N balance, plant development and defence, as well as a compatible osmolyte and an alternative pathway for glutamate utilization via anion flux. Glutamate decarboxylase (GAD, EC 4.1.1.15) and GABA transaminase (GABA-T, EC 2.6.1.19) are two key enzymes involved in the synthesis and metabolism of GABA. Recently, GABA transporters (GATs), protein and aluminium-activated malate transporter (ALMT) proteins which function as GABA receptors, have been shown to be involved in GABA regulation. However, there is no report on the characterization of apple GABA pathway genes. In this study, we performed a genome-wide analysis and expression profiling of the GABA pathway gene family in the apple genome. A total of 24 genes were identified including five GAD genes (namely MdGAD 1–5), two GABA-T genes (namely MdGABA-T 1,2), 10 GAT genes (namely GAT 1–10) and seven ALMT genes (namely MdALMT1–7). These genes were randomly distributed on 12 chromosomes. Phylogenetic analyses grouped GABA shunt genes into three clusters—cluster I, cluster II, and cluster III—which had three, four, and five genes, respectively. The expression profile analysis revealed significant MdGAD4 expression levels in both fruit and flower organs, except pollen. However, there were no significant differences in the expression of other GABA shunt genes in different tissues. This work provides the first characterization of the GABA shunt gene family in apple and suggests their importance in apple response to abiotic stress. These results can serve as a guide for future studies on the understanding and functional characterization of these gene families.

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Common and specific responses to iron and phosphorus deficiencies in roots of apple tree (Malus × domestica)

Cited by 16 publications

References 105 publications

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

Can Inoculation With the Bacterial Biostimulant Enterobacter sp. Strain 15S Be an Approach for the Smarter P Fertilization of Maize and Cucumber Plants?

Cross-Talks Between Macro- and Micronutrient Uptake and Signaling in Plants

Comprehensive Genome-Wide Identification and Transcript Profiling of GABA Pathway Gene Family in Apple (Malus domestica)

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