Whole-Genome Sequence Isolation, Chromosome Location, and Characteriza-tion of Primary Auxin-Responsive 
            <i>Aux/IAA</i> Gene Family in 
            <i>Aegilops tauschii</i>

乔麟轶,; 李欣,; 畅志坚,; 张晓军,; 詹海仙,; 郭慧娟,; 李建波,; 常建忠,; 郑军,

doi:10.3724/sp.j.1006.2014.02059

Cited by 1 publication

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“…Aux/IAA family member genes are often homologous in the same plant; for example, SlIAA2, SlIAA13, SlIAA15, SlIAA16, and SlIAA20 genes in tomato are functionally similar and are significantly expressed during root development (Wu et al, 2012). Other studies have also found specificity in Aux/IAA gene functions, such as the expression of AetIAA3, AetIAA11, and AetIAA26 in Aegilops tauschii, which are tissue-specific genes that are expressed specifically in pistils, seeds, and roots, respectively (Qiao et al, 2014). The majority members of the Aux/IAA TF family have been associated with lateral root growth.…”

Section: Introductionmentioning

confidence: 99%

Subsurface aeration mitigates organic material mulching-induced anaerobic stress via regulating hormone signaling in Phyllostachys praecox roots

Gao

Zhuang²,

Gui³

2023

Front. Plant Sci.

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Organic material mulching has been used extensively to allow Phyllostachys praecox to promote growth and development of shoots. However, the bamboo forest always showed a significant degradation, probably due to anaerobic damage caused by the mulching after several years. Therefore, we have innovatively proposed an improvement measure to aerate the underground pipes for the first time. We investigated the role of subsurface pipe aeration in regulating root hypoxia to reduce the stress and to identify the degradation mechanism. Results showed that aeration increased oxygen concentration, shoot yield and root growth compared with mulching, and the aeration enhanced the concentration of indole-3-acetic acid (IAA) and the expression of Aux/IAAs (Aux1, Aux2, Aux3, and Aux4). Aeration reduced gibberellin (GA), ethylene (ETH), and abscisic acid (ABA) contents as well as anaerobic enzyme activities (alanine transaminase, AlaAT; alcohol dehydrogenase, ADH; pyruvate decarboxylase, PDC; and lactate dehydrogenase, LDH), which alleviated root damage in anoxic conditions. Furthermore, correlation showed that the activities of ADH, LDH, PDC, and AlaAT showed significant linear correlations with soil oxygen levels. RDA analyses showed that ABA, IAA, and ETH were found as the key driving hormones of Aux/IAAs in the root of the forest mulched with organic material. Here we show that subsurface aeration increases soil oxygen concentration, shoot yield, root growth and regulates phytohormone concentrations and Aux/IAAs expression, which reduces anaerobic enzyme activities. Consequently, subsurface pipe aeration is an effective measure to mitigate the degradation of bamboo forests caused by soil hypoxia that results from organic material mulching.

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Section: Introductionmentioning

confidence: 99%