Chapter 6. Invasive Processes in the Life Cycle of Plants and Fungi

Kapoor, Karuna; Geitmann, Anja

doi:10.1039/9781839161162-00203

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, pressure drives RH growth and enables it to penetrate a mechanically resistant environment such as the soil. This process is called tip growth and has been also reported for many biological systems such as fungi and pollen tubes 8 .…”

mentioning

confidence: 79%

Mechanical resistance of the environment affects root hair growth and nucleus dynamics

Pereira,

Alline,

Cascaro

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Root hair (RH) cells are important for the growth and survival of seedlings. They favor plant–microbe interactions and nutrients uptake. When invading the soil, RH cells have to penetrate a dense medium exhibiting a variety of physical properties, such as mechanical resistance, that impact the growth and survival of plants. Here we investigate the effect of the mechanical resistance of the culture medium on RH-physical and phenotypical parameters such as length, time, and speed of growth. We also analyze the impact of the environment on nuclear dynamics. We show that the RH growth rate and the nucleus speed decrease similarly as mechanical resistance increases while the time of growth of RH cells is invariable. Moreover, during RH growth, the nucleus-to-tip distance was found to decrease when the stiffness of the environment was increased. Along this line, using Latrunculin B treatment in liquid growth media, we could internally slow down RH growth to reach speeds similar to those observed in stiff solid media while the nucleus-to-tip distance was only slightly affected, supporting thus the idea of a specific effect of mechanical resistance of the environment on nucleus dynamics.

show abstract

mentioning

confidence: 79%

Mechanical resistance of the environment affects root hair growth and nucleus dynamics

Pereira,

Alline,

Cascaro

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The Arabidopsis stigma along with the style are solid tissues where the pollen tubes undergo invasive growth before entering into the transmitting tract where the cells are more loosely organized (Ndinyanka Fabrice et al, 2017;Reimann et al, 2020;Kapoor and Geitmann, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…2). Pollen tubes undergo rapid polarized growth, and callose plugs are deposited to maintain turgor pressure and cytoplasm volume in the growing tip region by separating it from the older parts of the pollen tube (Kapoor and Geitmann, 2022;Kapoor and Geitmann, 2023).…”

Section: Discussionmentioning

confidence: 99%

“…Pollen tubes undergo rapid polarized growth, and callose plugs are deposited to maintain turgor pressure and cytoplasm volume in the growing tip region by separating it from the older parts of the pollen tube (Kapoor and Geitmann, 2022; Kapoor and Geitmann, 2023). The Arabidopsis stigma along with the style are solid tissues where the pollen tubes undergo invasive growth before entering into the transmitting tract where the cells are more loosely organized (Ndinyanka Fabrice et al, 2017; Reimann et al, 2020; Kapoor and Geitmann, 2022). The wildtype pollen tubes may be changing shape as they grow through a less responsive growth environment in the LRR-MAL RK mutant stigmas, though there was no significant impact on pollen tube growth distances at 2-hours post-pollination (Fig.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Arabidopsis LRR-MAL Receptor-like Kinasesregulate intraspecific and interspecific pollen-stigma interactions

Lee,

Sanchez,

Bordeleau

et al. 2023

Preprint

View full text Add to dashboard Cite

Flowering plants contain tightly controlled pollen-pistil interactions required for promoting intraspecies fertilization and preventing interspecies hybridizations. In Arabidopsis, several receptor kinases (RKs) are known to regulate the later stages of intraspecies pollen tube growth and ovular reception in the pistil, but less is known about RK regulation of the earlier stages. The Arabidopsis RKF1 cluster of Leucine-Rich Repeat Malectin (LRR-MAL) RKs was previously found to function in the stigma to promote intraspecies pollen hydration. Here, we tested additional combinations of up to seven Arabidopsis LRR-MAL RK knockout mutants for the RKF1 cluster, LIK1, RIR1 and NILR2. These LRR-MAL RKs were discovered to function in the female stigma to support intraspecies Arabidopsis pollen tube growth and to establish a pre-zygotic interspecies barrier against Capsella rubella pollen. Thus this study uncovered new biological functions for these poorly understood group of RKs in regulating the early stages of Arabidopsis sexual reproduction.

show abstract

Pollen tube invasive growth is promoted by callose

Kapoor

Geitmann

2023

Plant Reprod

View full text Add to dashboard Cite

Chapter 6. Invasive Processes in the Life Cycle of Plants and Fungi

Cited by 5 publications

References 0 publications

Mechanical resistance of the environment affects root hair growth and nucleus dynamics

Mechanical resistance of the environment affects root hair growth and nucleus dynamics

Arabidopsis LRR-MAL Receptor-like Kinasesregulate intraspecific and interspecific pollen-stigma interactions

Pollen tube invasive growth is promoted by callose

Contact Info

Product

Resources

About