A Complex Journey: Cell Wall Remodeling, Interactions, and Integrity During Pollen Tube Growth

Cascallares, Milagros; Setzes, Nicolás; Marchetti, Fernanda; López, G.A.; Distefano, Ayelén Mariana; Cainzos, Maximiliano; Zabaleta, Eduardo; Pagnussat, Gabriela Carolina

doi:10.3389/fpls.2020.599247

Cited by 34 publications

(17 citation statements)

References 136 publications

(196 reference statements)

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“…In Figure 3 , it is observed how enzymes involved in the synthesis or modifications of cellulose, hemicelluloses, or pectin participate in the development of specific floral organs, showing that flower formation requires regulation of several developmental processes with significant participation of the cell wall. Comprehensive reviews have been made, indicating the potential that the cell wall has within plant development [ 6 ], including specifically in flower development [ 106 , 107 ], pollen tube growth [ 108 ], and fertilization [ 91 , 109 ]. However, the function of proteins involved in the formation, development, or arrangement of cell walls is poorly understood in floral tissues.…”

Section: Discussionmentioning

confidence: 99%

Building a Flower: The Influence of Cell Wall Composition on Flower Development and Reproduction

Cruz-Valderrama

Bernal-Gallardo

Herrera-Ubaldo

et al. 2021

Genes

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Floral patterning is a complex task. Various organs and tissues must be formed to fulfill reproductive functions. Flower development has been studied, mainly looking for master regulators. However, downstream changes such as the cell wall composition are relevant since they allow cells to divide, differentiate, and grow. In this review, we focus on the main components of the primary cell wall—cellulose, hemicellulose, and pectins—to describe how enzymes involved in the biosynthesis, modifications, and degradation of cell wall components are related to the formation of the floral organs. Additionally, internal and external stimuli participate in the genetic regulation that modulates the activity of cell wall remodeling proteins.

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Section: Discussionmentioning

confidence: 99%

Building a Flower: The Influence of Cell Wall Composition on Flower Development and Reproduction

Cruz-Valderrama

Bernal-Gallardo

Herrera-Ubaldo

et al. 2021

Genes

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“…Thus, the observation that PbrDGK4 is distributed at the edge of the shank is consistent with the notion that it resides within the plasma membrane. Additionally, the tip of the pollen tube contains various substances related to its growth, including calcium, reactive oxygen species, and vesicles (Cascallares et al, 2020). The vesicles are involved in the process of endocytosis and exocytosis (Ruan et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Turnover of diacylglycerol kinase 4 by cytoplasmic acidification induces vacuole morphological change and nuclear DNA degradation in the early stage of pear self‐incompatibility response

Kong

Mei

Zhang

et al. 2021

JIPB

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Pear has an S‐RNase‐based gametophytic self‐incompatibility (SI) system. Nuclear DNA degradation is a typical feature of incompatible pollen tube death, and is among the many physiological functions of vacuoles. However, the specific changes that occur in vacuoles, as well as the associated regulatory mechanism in pear SI, are currently unclear. Although research in tobacco has shown that decreased activity of diacylglycerol kinase (DGK) results in the morphological change of pollen tube vacuole, whether DGK regulates the pollen tube vacuole of tree plants and whether it occurs in SI response, is currently unclear. We found that DGK activity is essential for pear pollen tube growth, and DGK4 regulates pollen tube vacuole morphology following its high expression and deposition at the tip and shank edge of the pollen tube of pear. Specifically, incompatible S‐RNase may induce cytoplasmic acidification of the pollen tube by inhibiting V‐ATPase V0 domain a1 subunit gene expression as early as 30 min after treatment, when the pollen tube is still alive. Cytoplasmic acidification induced by incompatible S‐RNase results in reduced DGK4 abundance and deposition, leading to morphological change of the vacuole and fragmentation of nuclear DNA, which indicates that DGK4 is a key factor in pear SI response.

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“…For effective fertilisation and seed setting, the pollen from the androecium has to reach the female gametophyte present in the gynoecium, and for this the pollen tube grows and moves through the transmission tract of the style. The extracellular space needed for the pollen tube growth is produced by programmed cell death (PCD), the NO TRANSMITTING TRACT gene encoding a C2H2/C2HC zinc finger transcription factor facilitates this (Cascallares et al, 2020 ). In addition to this, the movement is also facilitated by the expression of CENTRAL CELL GUIDANCE (CCG) gene encoding a transcription factor with a conserved N terminal zinc β-ribbon domain in the central cell of the mature female gametophyte (Chen et al, 2007 ; Li & Yang, 2020 ; Wang et al, 2010 ).…”

Section: Effect Of Zn Enrichment In Plantsmentioning

confidence: 99%

Seed nutripriming with zinc is an apt tool to alleviate malnutrition

Veena

Puthur

2021

Environ Geochem Health

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More than 2 billion people worldwide suffer from micronutrient malnutrition, sometimes known as hidden hunger. Zn malnutrition affects around a third of the world's population. The physicochemical features of soil, which limit the availability of Zn to plants, cause Zn deficiency. The eating habits of certain populations are more depended on Zn-deficient staple foods. Due to the high expense and certain interventions such as diet diversification, zinc supplementation and food fortification cannot be achieved in disadvantaged populations. Biofortification is the most practical technique for alleviating Zn malnutrition. Seed priming with nutrients is a promising biofortification approach for edible crops. Seed nutripriming with zinc is a cost-effective and environmentally benign approach of biofortification. Seeds can be nutriprimed with Zn using a variety of methods such as Zn fertilisers, Zn chelated compounds and Zn nanoparticles. Nutripriming with nanoparticles is gaining popularity these days due to its numerous advantages and vast biofortification potential. Seeds enriched with Zn also aid plant performance in Zn-deficient soil. Zn an essential trace element can regulate physiological, biochemical and molecular processes of plant cells and thus can enhance germination, growth, yield and bioavailable Zn in edible crops. Moreover, zinc emerges as an important element of choice for the management of COVID-19 symptoms.

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A Complex Journey: Cell Wall Remodeling, Interactions, and Integrity During Pollen Tube Growth

Cited by 34 publications

References 136 publications

Building a Flower: The Influence of Cell Wall Composition on Flower Development and Reproduction

Building a Flower: The Influence of Cell Wall Composition on Flower Development and Reproduction

Turnover of diacylglycerol kinase 4 by cytoplasmic acidification induces vacuole morphological change and nuclear DNA degradation in the early stage of pear self‐incompatibility response

Seed nutripriming with zinc is an apt tool to alleviate malnutrition

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